run out of steam
US /rʌn aʊt əv stiːm/
UK /rʌn aʊt əv stiːm/
1.
後勁不足, 筋疲力盡, 失去動力
to lose energy or enthusiasm and stop doing something, or to become tired and less effective
:
•
The project started strong, but it seems to be running out of steam now.
項目開始時勢頭很猛，但現在似乎後勁不足了。
•
After working for ten hours, I started to run out of steam.
工作了十個小時後，我開始筋疲力盡。