This is less than the total biological production in the main water column, or pelagic zone.

它比主水体或远洋区的生物总产量要少一些。

youdao

The main water-treatment plant serves Harare and the surrounding area.

这家主要的水处理厂负责处理哈拉雷以及周边地区的水处理。

youdao

24once the city's main water source, the Los Angeles River is now a concrete channel fed by storm drains.

曾经作为城市主要水源的洛杉矶河，现在是一条混凝土渠道，用于暴雨排水渠。

youdao

His main targets were companies that supplied the public with water, electricity,and natural gas.

VOA: special.2010.08.05

"The main concern,number one, everybody had more than anything, buy number,was food and water;

VOA: standard.2010.01.30

In developing countries, the main source of water pollution is not stormwater,but waste water.

VOA: standard.2010.08.04

The chemical, used to treat cloudy water, went straight into the main water supply.

BBC: Lowermoor treatment works, Camelford

Two rivers, the Ama Dariya and the Syr Dariya, served as the sea's main water supply.

NPR: Book Takes Wide-Angle View of a Changing Planet

Already the snowpack in the Sierra Nevada, the main water storage for the Delta, is shrinking.

ECONOMIST: Water in California