需水量 [
xū shuǐ liàng]
water demand
[土壤] water requirement
- 一般来说,食物能够提供每天需水量的20%左右。
On average food provides about 20 percent of total water intake. - 地下水提供了全球所需水量的五分之一,以及饮用水量的一半。
Groundwater provides about a fifth of the planet's water needs and half its drinking water. - 本周的《特别报道》关注的是需水量的增加所会导致的日益显见的后果。
Our special report this week looks at the increasingly visible consequences of the rising demand for water.