Q: if memory serves とはどういう意味ですか?
A: it means "If my memory is right", or "If I remember correctly".
Q: Clear memories are the fruit of repeated practice. とはどういう意味ですか?
A: Only after consistent, constant practice can you remember something clearly, remember every detail. "the fruit" is used to emphasize the cause and effect relationship, the results of an action are like the products of a plant.
Q: lost in a memory とはどういう意味ですか?
A: Another word would be "Reminisce". This means they are focusing on an event that has happened in the past, either fondly, or due to regret. Being lost can imply that they are also daydreaming (distracted).
Q: "may these memories break our fall"
(break our fall is?) とはどういう意味ですか?
A: to soften the fall, to make it less harsh/bad
Q: if memory serves とはどういう意味ですか?
A: it means 'if I remember correctly'. For example, 'If my memory serves, you promised that you would work for me tonight.'


Q: We have got memories and knowledge by efforts.some day it will be erased and be lost. を使った例文を教えて下さい。
A: I think that it would be better to replace "memories" for "wisdom". I think that's what you meant by "getting memories". If it's not, I'm sorry! ^^

I would write it like this:
"Our efforts give us wisdom and knowledge. However, everything we carry with us will be erased and lost one day."

"We are constantly learning a lot from our efforts but, one day, everything that we know will be erased and lost."
Q: It reminds meと It brings back memories を使った例文を教えて下さい。
A: Seeing children playing outside brought back memories of my childhood

That car reminds me of my dad'd first car

He reminded me about having to go get my wallet
Q: memory を使った例文を教えて下さい。
A: You have a really good memory.
That's my favorite childhood memory
My computer has 8GB of memory
Q: memory capacity を使った例文を教えて下さい。
A: My phone doesn't have much memory capacity.
This SD card's memory capacity is not enough.
Do you have one that has more memory capacity?
Q: If I lost my memories a thousand times, i will love you in each new memoey... Is this sentence wright を使った例文を教えて下さい。
A: You have a few errors you should write it like this:

If I lost my memories a thousand times, I would remember you in each one


Q: blurry memories と blurred memories はどう違いますか?
A: drinking too much alcohol blurred my memory

my childhood memories are a bit blurry

i can't give a conversational sentence with those exact words together because those words are a bit poetic in nature and tone.
Q: He retains clear memories of it. と He vividly remember it. はどう違いますか?
A: basically its the same
Q: his memorymemory of him はどう違いますか?
A: his memory is what he remembers, and memory of him is what someone else remembers about him
Q: The older we grow, the weaker our memory becomes increasingly. と As we grow older, our memory becomes weaker gradually. はどう違いますか?
A: Both are a little awkward. Try "As we grow older, our memory gradually weakens." Or, "The older we get, the more our memory weakens."
Q: memory stick と hard drive と USB はどう違いますか?
A: I would call a memory stick and USB the same thing.


Q: Looking back on memories several years ago. And sometimes recent photos. は 英語 (アメリカ) で何と言いますか?
A: Look back on memories several years ago. And sometimes also recent photos.
この部分は”look back”を使用してもういいです。
Q: what is a memory device exactly? is it like a flash drive? は 英語 (アメリカ) で何と言いますか?
A: Right. You can submit the files two ways:
1) put the files on a flash drive and mail them
2) e-mail the files
Q: I don't want to fade out of memory with something or somebody. How do English native speaker speak? は 英語 (アメリカ) で何と言いますか?
A: I don't want them to forget me.
Q: memory は 英語 (アメリカ) で何と言いますか?
A: QAの全文をご確認ください
Q: when you are thinking of your old good memories, any idioms you say? は 英語 (イギリス) で何と言いますか?
A: You could say: 'I am feeling nostalgic' ☺️


Q: The memory of people in their 60s could be improved to that of people in their 30s if they drink cocoa for 3 months.

This is about the report by the research team of Columbia University in New York City that announces that the components of cocoa are able to improve the age-related memory decline.

According to the report, foods which improve the memory decline include red wine, chocolate (non-sugar), and coffee (non-sugar). And it tells that cocoa is also one of the group which can revitalize the brain.
A: "According to the report, foods which prevent memory decline..." Saying that something 'improves memory decline' means it aids in you losing your memory!

"It (the article) mentions that cocoa is also a part of this group." You can end it there, because the reader already knows about the revitalizing effects of these food items now.
Q: Their memory is very good!
Their memories are good!

Which should I say when I want to say, the person remember vocabulary well.
A: The first one; "their memory is very good." Though if your talking about the person you are speaking to then you would say, " your memory is very good." or if your speaking to multiple people you would say, "everyone's memory is very good."

Saying "Their memory is very good." is talking to someone about someone else, not to them directly.

Saying "memories" instead refers to somebody's actual memories, (times the call recall from the past) not the memory capacity.
Q: The memory has been deleted on my mind. この表現は自然ですか?
A: No. When something is "on your mind", it means it's currently what you are thinking of. You can't have forgotten something that is currently "on your mind."

Though, you can say something like, "I want to forget what's been on my mind."
Q: I have great memories with this house. I can't even think about selling it. この表現は自然ですか?
A: "...of this house..." =)
Q: Speaking from memory, I believe he's from California. この表現は自然ですか?
A: Even though your sentence is technically correct, I would rather say something like...
"If I recall, I believe he's from California" or
"If I remember correctly, I believe he's from California."
I think those would sound a bit more natural.