put on weight意思是發(fā)胖。

同義詞：

gain weight增重/變胖

get fat長(zhǎng)胖

fill out長(zhǎng)胖

flesh up長(zhǎng)胖

例句：

That's terrible for your health. It's easy to gain weight that way.

那對(duì)你的健康很不好。那樣很容易長(zhǎng)胖。

Chocolate does contain large quantities of energy, so if you eat too much of it, you can put on weight.

巧克力確實(shí)含有高度熱量，所以如果你吃太多，你的體重會(huì)增加。