I'd really like to pick up Grandpa at the railroad station.

我真想去火车站接爷爷。

but when I received the letter

但是当我收到那封信

and this is an important decision we have to make.

这又是我们必须做的一个重大决定。

Let's go.

我们走。

I'm a friend of Pete's.

我是Pete的朋友。

to print my announcement.

刊登了我宣布竞选的消息。