Construction and maintenance of two wood debris dams across the outlet stream of Spring Pond.
近来，你在春池的河流出口处建造和维护了木堆水坝，这是违规的。
It provides a healthy stream of maintenance fees, about 40% of Sun's sales.
源源不断的稳定的维修保养费大约占到Sun销售额的40%。
It provides a healthy stream of maintenance fees, about 40% of Sun's sales.
源源不断的稳定的维修保养费大约占到Sun销售额的40%。
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