plumb
名词 plumb:
the metal bob of a plumb line
动词 plumb:
measure the depth of something
weight with lead
examine thoroughly and in great depth
adjust with a plumb line so as to make vertical
形容词 plumb:
exactly vertical
副词 plumb:
completely; used as intensifiers
conforming to the direction of a plumb line
exactly
同义词:plum