彼は臨機応変の処置を取った。

tbd

He took the proper steps to meet the situation.

面接では君は臨機応変に答えなくてはならないでしょう。

tbd

You'll have to play it by ear at the interview.

何か実際に起これば、私は臨機応変にやるだけだ。

tbd

If something does happen, I'll just play it by ear.

まさに臨機応変の対応。見事というべきだね。

tbd

He handled things wonderfully, playing it by ear the whole way. I have to say he did an excellent job.