low water mark的用法和樣例：
例句
- The boat was pointing and leaning sharply along the water line.
小船迎風航行，船體沿著水位線嚴重傾斜。 - Above the water table, ancient caverns abandoned by the river slowly fill up with stalactites and stalagmites.
在地下水位線，遠古洞穴溢滿的河水中充斥著石筍和鐘乳石。
辭彙搭配
- be at low-water mark 手頭拮据
