重点讲解：
1. cling to
紧紧抓住；抱紧；
eg. The cat tried to cling to the edge by its claws.
猫用爪子拼命抓住那边缘。
eg. Survivor cling to a raft.
幸存者们紧紧抓住救生伐。
2. set out
动身；出发；
eg. Let us set out when the sun has risen.
太阳一出来，我们就动身。
eg. So they got a crippled pick and a shovel, and set out on their three - mile tramp.
于是，他们就找到一把不大好使的镐和一把铁锹，踏上了三英里的路程。
3. separate from
分开；分离；
eg. They have been kept separate from my sponsors, my commercial endorsements.
他们一直与我的赞助商、我的商业代言等保持距离。
eg. Benefits administration is and should be separate from payroll.
福利是并且应该是同薪酬分开管理的。