The APU was filled with water from natural and artificial reservoirs up to 3 meters deep.
APU 充满了来自深达 3 米的天然水库和人工水库的水。
大商业时代
Two entirely new steel kingdoms, each with its own natural reservoirs of ore, grew up in Colorado and Alabama.
两个全新的钢铁王国在科罗拉多州和阿拉巴马州成长起来, 每个王国都有自己的天然矿石储量。
英语百科
Natural reservoir
A natural reservoir or nidus (the latter from the Latin word for "nest") is the long-term host of a pathogen of an infectious disease. Hosts often do not get the disease carried by the pathogen or it is carried as a subclinical infection and so asymptomatic and non-lethal. Once discovered, natural reservoirs elucidate the complete life cycle of infectious diseases, providing effective prevention and control.