Listen, Richard,doing aerobics for an hour is a lot different than lifting weights.
听着, Richard,一小时的有氧运动可与举重大不相同。
There is only enough spring water to supply the needs of the houses, so we have to pump from the river for farm use.
泉水只能满足家庭生活用水,因此我们必须从河里抽水以用于农业生产。