到这时我已是话也说不清的废人了。

By this time I was a gibbering wreck.

《牛津词典》

到这时他30岁了。

By this time he was thirty.

《柯林斯英汉双解大词典》

到这时她已经九十多岁了，越来越频繁地需要帮助。

By this time she was in her nineties and needed help more and more frequently.

《柯林斯英汉双解大词典》

No, we can't. Because if l equals 1, we can not have m sub l equal negative 2, right, because the magnetic quantum number only goes from negative l to positive l here.

不行，因为如果ｌ等于１,ｍｌ的值不可能等于－２，对吧，因为磁量子数的值,这时只能从－１到１

麻省理工公开课 - 化学原理课程节选

You're asked to take a long walk in the park with your parents. And you're just saying,

你还得陪父母到公园里散步。你这时会感慨道，

I like课堂 - SpeakingMax英语口语达人

At this stage I'm at my singleton case.

到这时，我已经得到单一元素情况了。

麻省理工公开课 - 计算机科学及编程导论课程节选