water pump seal spring guide 水泵密封弹簧导套
water pump impeller spring 水泵叶轮弹簧
water pump seal thrust spring 水泵封圈推力弹簧
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。
There is not enough spring water to supply the needs of the house, so we should pump from the river for farm use.
泉水只能用于满足家庭生活用水，因此我们必须从河里抽水以用于农业生产。
There is only enough spring water to supply the needs of the house, 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。
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