重点讲解：
1. hang up
悬挂；吊；
eg. I found his jacket, which was hanging up in the hallway.
我找到了他那件夹克衫，就在门厅里挂着Pzm]cYp&hYAy%fiQl_^。
eg. Some prisoners climbed onto the roof and hung up a banner.
几个囚犯爬上房顶，挂起了一面旗子hyCO6eAitpP810zCjzBX。
2. for sure
无疑；肯定；
eg. It's impossible to know for sure how much you're consuming.
要想知道确切的食盐摄取量几乎是不可能的事情7U3rDr@7XoAZ|A#nXA。
eg. No one knows for sure how people first learned to preserve food.
没有人确切地知道当初人们是如何学会保存食物的=*K8nJ4IdHENpy;。
3. put on
穿；戴；涂；抹；
eg. The man put on his smock and went out.
那人穿上罩衫，然后走了出去uW6@en(X-O%Om8P。
eg. I put on the pearl earrings Daddy had bought me.
我戴上了爸爸给我买的珍珠耳环&djWa1L;Nr!SJ。
4. give out
分发；散发；
eg. The teacher gave out the examination papers.
教师发了考卷7T~UkvG[_@1|0OJ-m7_。
eg. The American seem to give out their invitations so far in advance.
美国人似乎提前许多天就发出请fN&~x+sS5[(WYPCXb0。
5. once in a while
偶尔；间或；
eg. Once in a while we had a major blowout.
我们偶尔会吃顿大餐%!+s7sdq=JGi_tgwb%。
eg. I watched things change and made observations every once in a while.
我观察着事物的变化，时不时地提出我的意见t]F.j4MXPWuokyTTFM。