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重点讲解：
1. call it quits 决定结束；就此了结；
They raised $630,000 through listener donations, and then called it quits.
他们通过听众捐款的方式筹集了63万美元后宣告结束。
2. go silent 陷入沉默；
The room went silent, and the meeting ended very quickly after that.
一时之间，屋子里陷入寂静，而这次商谈也很快结束了。
3. light up 照亮；发亮；
There was an explosion and the whole sky lit up.
一声爆炸照亮了整个天空。
4. return to 返回，回到；
Many are planning to return to their homeland.
很多人正计划回到自己的祖国去。
n. 全部，总数
