Mean low water (MLW) is the average height of all lowwaters at given place.
平均低水位(MLW)为给定地区所有低潮位的平均值。
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Prior to the late 1990s, this type of phytoplankton showed up only sporadically during summer blooms, usually in conjunction with the upwelling of low-oxygen waters.
The waters swamped low-lying suburbs, tore ferries from their moorings and cars from their parking bays, and turned Brisbane’s business district into a ghost town.