fizzle out

US /ˈfɪz.əl aʊt/
UK /ˈfɪz.əl aʊt/
"fizzle out" picture
1.

逐漸消失, 虎頭蛇尾, 失敗

to end or fail in a weak or disappointing way after a promising start

:
The protest movement seemed to fizzle out after a few weeks.
抗議運動在幾週後似乎逐漸消失了。
Their initial enthusiasm for the project began to fizzle out.
他們對這個專案的最初熱情開始逐漸消退