プログレッシブ和英中辞典(第4版)の解説
いっきょ【一挙】
問題を一挙に解決する
solve a problem at a stroke
彼の自信は一挙に崩れ去った
All of a sudden his confidence deserted him.
一挙に仕事をかたづけた
I finished off the task 「at once [in short order].
一挙一動
one's every move(ment)
彼女の一挙一動も見逃すまいと見張った
I watched her, trying not to miss even the slightest movement.
警察は容疑者の一挙一動を見張っていた
The police watched every move the suspect made.
一挙両得
killing two birds with one stone
彼は出世と財産の一挙両得をねらって社長の娘に接近した
He had his eye on both success and a fortune, so he approached the president's daughter.