Plumb line
01
铅垂线, 垂直线
a cord from which a metal weight is suspended pointing directly to the earth's center of gravity; used to determine the vertical from a given point
语法信息
有生性状态
无生命
形态构成
复合词
可数
singular
not gender specific
复数形式
plumb lines
铅垂线, 垂直线
