重点讲解：
1. wait for
等待；等候；
eg. I always remind myself that time and tide wait for no man.
我总是提醒自己岁月不待人。
eg. I'll wait for a seasonable moment to speak to her.
我要等个适当时机跟她说话。
2. one another
互相；
eg. The two countries do little trade with one another.
两国之间很少有贸易往来。
eg. We all try and help one another.
我们都尽力互相帮助。
3. laugh at
嘲笑；讥笑；
eg. I thought they were laughing at me because I was ugly.
我觉得他们嘲笑我是因为我长得丑。
eg. It's unkind to laugh at a person who is in trouble.
讥笑一个陷入困境的人是不仁慈的。