重點講解：
1. split up
拆分；（把…）分成若干較小部分；
eg. His land is split up into several widely scattered plots.
他的土地被分割成相當分散的幾小塊。
eg. Now , children, you must split up into two groups for this game.
孩子們，玩這種游戲必須分成兩組。
2. in the dead of winter
在隆冬；
eg. Early one Thursday morning in the dead of winter I awoke to a blizzard.
隆冬時節的一個星期四，一大早醒來我就發現外面刮起了暴風雪。
eg. In the dead of winter they found the last survivors.
他們在隆冬時節找到了最后的那些幸存者。
3. be forced to do sth.
被迫做某事；
eg. The band was forced to cancel a string of live dates.
樂隊被迫取消了一系列的現場表演。
eg. I was forced to sign the agreement against my will.
我被迫違心地在協議上簽了字。