PETS-2每日必备词汇16

When you are dieting, you should eat smaller portions than normal.
你在节食的时候,要吃得比平常的份量少。

second　
(n.) (食物的)第二份

Going back for seconds is a good way to ruin your diet.
再去吃第二份是打破节食的好方法。

drop by

顺便，随便走访

Why don’t you drop by some time?
你什么时候顺便来看看吧。