Don't talk with your mouth full.

嘴里有食物，不可开口说话。

Don't talk with your mouth full of food.

不要口里含着食物说话。

Being able to talk with your mouth full. Never again having to worry about losing your phone.

下面是一些我也曾想过的“好处”——你能在满嘴吃着东西的时候与别人交流；你永远也不必再担心丢失手机了。

You know not to talk with your mouth full or slurp your soup. But pay attention to the expectations peculiar to the business lunch, and it may pay dividends later.

你知道满嘴食物时不要说话，也知道喝汤时不要发出很大的声响。但是，注意一下商业午餐特有的礼仪，稍后你就会感觉到它带来的益处。