high-water line

例句：

1. 1. The high-waterline marks the highest point of the riverduring floods.
   高水位线是河流在洪水期间的最高点。
2. 2. Theflood line was set ata certain elevation to prevent flooding.
   洪水线被设定在某个高度，以防止洪水。
3. 3. The construction crew marked the high-water line with stakes before startingwork.
   施工队在开始工作前用桩子标出了高水位线。