Searching for one man in this big city is like looking for a needle in a haystack. 在這座大城市裡尋找一個人猶如大海撈針。
The staff speak as one man on this issue. 在這個問題上全體職員意見一致。
There is only one man qualified for the job. 僅有一個人能勝任這個工作。
I don't mind my daughter going out with a group, but I don't want her to be alone with one man. There is safety in number. 我不介意我女兒和小組一起外出，但我不願意讓她單獨和一個男人在一起，人多安全。
