drop away

英文解釋：

動詞 drop away:

1. get worse
   同義詞：slip, drop off, fall away

英文造句：

1. The lecture was so dull that soon the audience begin to drop away.
   演講單調乏味，不久，聽眾就開始陸續離席了。
2. I think such customs will soon drop away.
   我想這些風俗不久就會逐漸消失。