perform in front of a live audience
観客を前に演奏する
perform laboratory experiments [tests, studies]
実験する
perform the essential functions of [as] a teacher
教師としての基本的な職務を果たす
performance indicators
業績評価指標
Performance will improve with practice.
練習すれば出来がよくなる
Perhaps he has lost it.
ひょっとしたら彼はそれをなくしたかもしれない
Perhaps it will rain tomorrow.
ひょっとするとあすは雨かもしれない
Perhaps [Possibly, Probably] so.
たぶんそんなところだ
Perhaps you would be good enough to post this letter.
((略式))できたらこの手紙を投函してくださいますか（◆Would you be good ...？のていねいな表現）
Periods of depression alternate with periods of elation.
交互に躁鬱そううつが襲う
