1.When an opportunity comes, you just grab it.
当机会来临时，你就要抓住。

2.grab a beer or two; grab something to drink.
一起喝两杯。

3.grab dinner with me.
和我一起吃晚饭。

4.grab something to eat; grab a bite.
找点东西吃。

5.grab a taxi=take a taxi
打车