"Hello, haven't seen you for a long time! You look fine! How is the young man?"

“你好，好长时间没见到你了！你看起来很好！那个年轻人怎么样？”

youdao

Macfarlane had wondered for a long time how the Industrial Revolution came about.

麦克法兰早就想知道工业革命是如何发生的。

youdao

The real work was being done by people who knew how to play the saxophone or improvise a long melody with a few chords and a swing beat for support.

真正的工作是由那些知道如何演奏萨克斯管的人来完成的，或者是那些用几个和弦和一个摇摆节奏就即兴创作一段很长的旋律的人来完成的。

youdao

And I know how long a piece they want. Then I daydream a lot, trying to figure out what might be interesting for that group to do."

VOA: special.2010.07.12

How it ends up in the long run for the Dutch is that the Dutch cease to be a great power.

荷兰长远之后的下场,便是荷兰国力日衰,风光不再

耶鲁公开课 - 欧洲文明课程节选

I'm going to live here for, who knows how long. Quite a long time.

我打算定居在这儿，不知道多久。会是相当长一段时间。

追忆艾米 - SpeakingMax英语口语达人

Right now those with private insurance have to endure a labyrinth of approvals and preapprovals from a behavioral health "specialist, " who sits behind a desk in a remote location deciding on who gets coverage for how long and for what on a "case-by-case" basis.

FORBES: Reinventing Rehab

Mola then measures how long it takes for a reflection to return to the spacecraft.

BBC: New view of giant Martian volcano

There is also concern about how ground water and irrigation wells will be affected: it is hard to judge how long it takes for a coal aquifer to refill.

ECONOMIST: Energy supplies