to tail off
[phrase form: tail]
Disapproving
Informal
例子
The excitement of the event began to tail off towards the end.
活动的兴奋感在接近尾声时开始减弱。
The effectiveness of the medication might tail off over time.
药物的效果可能会随着时间的推移而减弱。
DisapprovingInformal
