When the front bird moves its wings up and down, the resulting force of the air lifts the next one.

当前面的鸟上下移动它的翅膀时，产生的空气力会带动下一只鸟。

youdao

Servers that are up and running one moment may be down the next.

服务器在某一时刻启动并运行，但是可能在另一时刻当机。

youdao

She turned around and started running back up the hill she'd just stumbled down. Up one hill, down the next.

她转过身，开始向刚才好不容易爬下来的山丘又爬上去，爬上一座山丘然后又爬下另一座。

youdao

Stock prices took a roller-coaster ride this week -- down one day,up the next.

VOA: special.2009.08.21

Similarly we see as we go down the table, so as we're going from one row to the next row, so, for example, between helium and lithium, we see a drop; the same with neon to sodium, we see a drop here.

同样地，我们来看看沿着周期表往下走，当我们从一行到下一行时，比如，从氦到锂，我们看到了一个下落;,从氖到钠也一样，我们看到这里有个下落。

麻省理工公开课 - 化学原理课程节选

She married an anarchist from the Department of the Ardeche, where we happened to live or are, at least were legally residents and spend much of our time down here; and she moved from one school to the next.

她嫁给了一个阿尔代什省的无政府主义者,正好我们当时住在那,或者说至少是合法居留然后在这边呆了很长时间,然后她从一个学校换到另一个学校

耶鲁公开课 - 1871年后的法国课程节选

You know, the next one is maybe the economy, down at 17 or 18 percent.

NPR: Presidential Race Comes Early to Primary States

So, yeah, this is a great deal but I think there's probably a better one down the street next week.

NPR: Existing Home Sales Are Up Slightly

Of the 19 respondents, 14 see prices moving up next week, while one sees prices down and four see prices sideways or unchanged.

FORBES: Gold Market Expected To Focus On Greece, Fiscal Cliff, Fed Speakers Next Week