go for it

To encourage someone to do something that they have planned

鼓励某人做他们已经计划的事情

The literal meaning is to "decide on" or "choose." However, it is commonly used informally to encourage them to take action on something they are thinking about doing.

字面意思是“决定”或“选择”。但是，它通常被非正式地用来鼓励某人对正在考虑做的事情采取行动。

A: I really like her. Should I ask her for her phone number?

我真的很喜欢她。我应该问她要电话号码吗?

B: Go for it man! You have nothing to lose.

去吧，去了也没什么损失嘛。