A contraflow system is in operation on this section of the motorway.

这段高速公路的一侧正在实行双向行驶。

《牛津词典》

Given this potential, why is it that so far, not a single commercial wave-power generator is in operation?

既然潜力如此巨大，那么为何迄今为止无任何一台商用海浪能发电机投入使用。

youdao

And my bet, as I said, is that the same process is in operation wherever life may be found, anywhere in the universe.

我敢打赌，就像我之前所说的，这个同样的过程也在其他任何存在生命的地方进行着，宇宙中的任何地方。

youdao

Michael Johnston is twenty-seven. He was first deployed to Iraq in two thousand three at the beginning of Operation Iraqi Freedom.

VOA: special.2011.07.08

1%10 So if you actually do in a program 11 percent 10, 1 what you'll get back is 1 because that is in fact the remainder of that arithmetic operation.

如果在编程里就是，返回,因为1是这个计算式的余数。

哈佛公开课 - 计算机科学课程节选

We have to make sure that, in fact, that operation is not linear.

事实上，操作不是线性的，那让我来解释下这一点吧。

麻省理工公开课 - 计算机科学及编程导论课程节选

Even though the Sava River bridge is in operation, it requires constant maintenance and reinforcement.

CNN: Bosnia begins peaceful 1996

Its Liaoning Birla carbon in China, a partnership with Dashiqiao Ronghua Co, is in operation since 2003.

FORBES: Billionaire Kumar Birla expands his carbon black footprint

Nor is there much in the notion that, once a single currency is in operation, profligate sovereign borrowers will weaken it or push up interest rates.

ECONOMIST: Europe's mid-life crisis