如果你还是不明白，我们再讨论这功课一遍。

If you still not understand, we go through the exercise once again.

youdao

如果你还是不明白，让对方放慢语速再说一遍直到你听懂为止。

If you still don't understand - ask for it to be repeated at a slower pace or until you understand the message.

youdao

我不明白，如果你当时在自行车比赛的行进路线上，我们为什么没能看到你，不管是在骑行还是在睡觉。

I did not understand how we could not see you if you were along the biking route, either biking or sleeping.

youdao