In places, the water table is declining at a rate of a meter a year, necessitating the periodic deepening of wells and the use of ever-more-powerful pumps.
在一些地方，水位正以每年一米的速度下降，需要定期加深井并使用更强大的水泵。
2
After 1990, that rate of decrease went up to 1.1 watts per square meter per year.
20世纪90年代之后，这一数字增加到了1.1瓦特每平方米/年。
3
Because of Alzheimer's, cancer, brain damage, intense pain or other constrictions, they do not rate very high on the Quality of Life meter.