Let's grab something to eat!
我们随便找点东西里腹吧!

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Grab something to eat 就是指这一餐随便解决, 可能就是到速食店买个 whopper, coke 吃吃. 如果到餐厅去吃饭就不能说 grab something to eat. Grab 是说去拿个东西, 不一定是拿食物, 例如你可以说, Let's get back to grab my camera! 但是一般而言, 应用最广的还是 grab something to eat.
　 老美还教过我一个用法, Let's go get some grub. 这个意思和 grab something to eat 是一样的, 只不过 grub 是比较俚语的用法.

Let's go get some grub.
Let's grab something to eat!

Let's go get some grub.
Let's grab something to eat!

Let us grab sth to eat .

now i am so hugry!
so Let's grab something to eat!

Let's grab something to eat!

Let's grab something to eat!

Let's grab something to eat !