自从我上次演奏以来已经过了这么长时间了。

It's been such a long time since I played.

《柯林斯英汉双解大词典》

只有经过很长时间以后，新产品和新生产流程才转移到发展中国家。

New products and production processes are transferred to the developing countries only after a substantial amount of time has lapsed.

《柯林斯英汉双解大词典》

经过长时间的包围，这座孤城被迫投降。

After a long siege, the town was forced to yield.

《牛津词典》

Followed by a long history of inferior schools and segregation, and also expectation, continued disparity in terms of school and education, which comes to another question.

经过了长时间的,低等教育和种族隔离，以及学校及教育上,长期的歧视和不平等，这就牵扯到了另一个问题。

麻省理工公开课 - 媒体、教育、市场课程节选

Here is the pitch in--of--a string an octave higher so you can see it this way. As you probably know, if you take a long string and pluck it, it's going to take that long string a long time to pass that sort of cycle, if you will, just one pass through that cycle.

这也是个音高,一个高八度的音弦,你可以这样这样看 你们可能知道,如果你拨动长弦,长弦要经过很长时间,才能完成一个震动周期,如果你想,可以尝试下

耶鲁公开课 - 聆听音乐课程节选