For treatment plants which have additional upstream hydraulic head available, the operating water level can be raised and the shaft bearings can then be mounted directly to the top of the tank walls.

这促使轴，对于具有额外的上游水力头的污水处理厂，可以提高运行污水水平，然后直接将轴轴承提高到池壁顶端。

youdao

Surgeons began to scrub their hands and arms with soap and water before operating.

外科医生们在手术前开始用肥皂和水清洗他们的手和手臂。

《柯林斯英汉双解大词典》

Regulations such as minimum operating age, restricted operating areas and compulsory classes in water safety are essential.

诸如最低操作年龄、限制操作区域和水上安全必修课等规定是必不可少的。

youdao

In Washington, a U.S. defense official said the U.S. Navy will contribute two high-tech acoustic devices to listen for emergency beacons still operating in deep water.

CNN: More bodies found from Air France crash

Treatment continues at the sites today, with vapor barriers in place, so-called slurry walls going down 40 feet into the earth, well sucking up water to be treated, and systems operating to extract toxins from the air and water.

FORBES: Google Buildings Polluted With Toxic Vapors From Chemical Spills

Using less electricity, using less oil or using less water helps keep operating costs lower which allows Wal-Mart to keep prices down.

FORBES: Has Wal-Mart Has Lost Touch With Its Populist Roots?