请自便，随便吃点水果。

Help yourself to some fruit.

孩子们，请随便吃点鱼。

Boys and girls, help yourselves to some fish.

随便吃点鸡肉

Help yourself to eat some chicken

在美语中，当你说自己想去“grab a bite（随便吃几口）”，意思是你想现在去吃点东西，或者是你想随便吃点东西，不要花太长时间。

In American English, when you say you want to grab a bite, is means that you want to eat right away, or that you're interested in eating quickly.

他决定在去特里萨家之前的时间，随便吃点东西。

He decided to get a bite to eat until the time came to go to Teresa's house.

户外运动后30到60分钟内随便吃点东西，将帮助你的肌肉复原，并恢复身体营养素的储存量。

Eating a small snack 30 to 60 minutes after a workout is the most beneficial time to help your muscles recover and to replenish the body's nutrient stores.