Eat out 在外吃饭
How about eating out today? We haven't been to our favourite restaurant for a long time.

出去吃怎么样？我们很久没去我们最爱的餐厅了。

Grab a bite 先吃几口
And we dropped by here to grab a bite.
我们路过这里来吃点东西。

Pig out 狼吞虎咽
He prefers to pig out and not work out.
偏好大吃大喝，不爱做运动。

Eat like a bird 吃得极少
You must eat like a bird if you want to lose weight.
你想减肥的话，就得少吃。

Be on a diet节食
Do you still want to be on a diet?
你还想节食吗？

Eat up吃完
Eat up your dinner before it gets cold.
趁热赶快把饭吃掉。