I dont know when we leave.

我还不知道我们什么时候出发呢。

youdao

I dont know when to quit.

我不知道什么时候放弃。

youdao

When they peeked in on the pessimist, they heard him audibly complaining,“I dont like the color of this computer. I know someone who’s got a bigger toy car than this . . .”

他们偷偷观察悲观主义者，听到他大声抱怨：“我不喜欢这台电脑的颜色；这台玩具车太小，我知道别人有个比这更大的……”

youdao