重点讲解：
1. on the verge of 即将；接近于；濒于；
There's no one she can talk to, and she's on the verge of collapse.
她找不到一个可以倾诉的对象，快要崩溃了*q]w5PN3~!+4g-qC。
2. in the middle of 中部；中央；中间；
I reached for the lamp, which stood in the middle of the table.
我伸手去够位于桌子中央的灯Uk_3t~N^NqnQK。
3. break off 折断；（使）断开；
The two wings of the aircraft broke off on impact.
飞机的两个机翼遭受撞击折断了pk11[9]S*K%。
4. flesh out 加细节于；使丰满；充实；
In general, it is not that hard to flesh out such details.
通常，充实这类细节内容并不是很难,!Ft9]d_]cR.6ijrvD8。