low-water mark
['ləu'wɔtə]
低潮线；低水位线
最低点；最低程序
同义词
参考例子
1.Still, the water Tuesday was high enough to flood the city's landmark St. Mark's Square and other low-lying areas.
然而，周二的海水还是没过了城市地标圣马可广场及其他一些地势较低的区域。
2.The result shows that the food security in this area is in a downward trend in recent years, the overall situation belongs to"slight warning"rank. Especially there is a low-water mark in 2003.
其结果显示，近年来珠江三角洲地区的粮食安全程度呈下降趋势，整体属于轻度风险警级，尤其以2003年为最低点。
英文解释
n.
1.an extreme state of adversity; the lowest point of anything
2.a line marking the lowest level reached
网络释义
low-water mark
最低点; 低潮线低水位线; 低水位线; 低潮水位标志;
low-water mark of ordinary tide
普通潮低潮标志;
low-water mark of medium tide
中潮低水位标志;
low-water mark of ordinary spring tide
普通大潮低潮标志;