重点讲解：
1. hang out
闲逛，逗留；
eg. I often used to hang out in supermarkets.
我过去经常在超市里逛个没完z%XEcA2Z5te1_。
We can just hang out and have a good time.
我们可以只是闲逛一下，开开心dQ04DgyBu[872=piP。
2. joke around
开玩笑；闹着玩；
eg. John wanted to talk turkey, but Jane just wanted to joke around.
约翰想谈正派事，可是简只想闹着玩DoCVxO&z2sb~pO[@N7。
eg. If one of us can laugh and joke around, the angry mood lifts instantly.
如果有一个人能发出笑声，开一开玩笑，愤怒的情绪便会立刻消散CH1sf@5GPr=[A(0f2gM。
3. play pool
打台球；打桌球；
eg. Jay likes to play pool at the bar.
杰伊喜欢在那家酒吧打美式台球[Tb,2)|GM;=。
eg. Whether you can play pool well depends on your mentality and experience, so is giving a speech.
你是否能打好台球取决于你的心态和经验，演讲也是一样z4^7YygyqTZW;g。
4. start out
起初；开始；
eg. What started out as fun quickly became hard work.
起初好玩的事很快就变成了艰苦的工作85=oA9q9)C^pLYzj。
eg. The child'll start out by making relatively few distinctions in the language.
孩子开始时不太能辨别语言中的差别8jtxavQPK]jKcpS。