First of all, you should decide when and where to go and how long you will be there .

首先，你应该决定何时何地出发，你会在那呆多久。

youdao

First of all, you should decide when and where to go and how long you will be there .

首先，你应该决定何时何地出发，你会在那呆多久。

youdao