Q: Pour faire baisser la tension とはどういう意味ですか?
A: To lower tension
Q: rigged faire game instead of rigged fair game? とはどういう意味ですか?
A: "Faire" is an antiquated spelling of "fair" in the sense of "carnival or festival." In the modern day you usually only see it in the phrase "Renaissance faire," an event based on medieval European history in which people perform in historical costumes.


Q: faire de la plongée は 英語 (アメリカ) で何と言いますか?
A: Scuba diving
Q: faire une nuit blanche は 英語 (アメリカ) で何と言いますか?
A: make a sleepless night
Q: j'aimerai faire mes études aux États-Unis は 英語 (イギリス) で何と言いますか?
A: I'd like to do my studies in the USA.
Q: empêcher quelqu'un de faire quelque chose は 英語 (イギリス) で何と言いますか?
A: to prevent someone from doing something

to stop someone from doing something
Q: faire un détour は 英語 (イギリス) で何と言いますか?
A: make/take a detour


Q: savoir- faire

I know what it means. Could you give me some examples of sentences - I need to see it in a context/contexts to know how to use it.

Is it a very formal expression? Are there any other more informal ways to say that?

Thanks in advance! :)
A: That's French, not English.
Q: Hello :) how do you say "faire le tour de ville" as in "if you miss this road you'll have to...." (si tu manques cette route tu devras faire le tour de ville)
A: It could mean "go/get around town" or since in this context you seem lost, maybe "wander around town"