water activity

常见例句

Both rovers have now found evidence of past water activity on the planet, NASA announced last week.
上周美国宇航局宣布，两辆火星车现在都已经发现火星上曾经有水存在的证据。
Scientists believe water activity affected this plateau after the formation of the nearby canyons. Although the source of water and sediment remains uncertain.
科学家相信，在附近峡谷形成之前这片高原受到过水的影响，虽然水源和泥沙的问题仍不明朗。
"The stability against freezing of Martian fluids can explain saline water activity on the surface of Mars at mean global temperatures well below 273 Kelvin," they wrote.
他们写道，“稳定对火星流体冻结还可以可以解释在全球平均气温远低于273开尔文下火星表面的盐水活动。”

"Kids really get engaged in science in the garden where it's a kind of fun activity where they're collecting data and seeing how different temperatures will change the amount of water that's needed by a crop, so the science concepts come easily."

Water can be easily stored and consumers have less discretion over when they use it (for instance, people cannot defer going to the toilet, which uses more water than any other activity at home), so the case for smart water meters is weaker.
ECONOMIST: Utilities are getting wise to smart meters and grids
Don't be surprised if it stops counting water as a core activity—and eventually sells what it has spent so much to buy.
ECONOMIST: Water industry
However, both are now seriously threatened by deforestation and invasive practices, including intensive mining and logging, extensive livestock activity, water pollution, degradation of headwaters, unregulated processes of urban settlement, construction of roads, waterways and dams, drainage and diversion of rivers, burning of forests and illegal fishing and trade in wildlife.
UNESCO: Intangible Cultural Heritage