deadwood

名词 deadwood:

1. a branch or a part of a tree that is dead
2. someone or something that is unwanted and unneeded
   同义词：fifth wheel

1. The methods used have helped enormously in cutting out deadwood.
   这些方法在废物利用方面起了相当大的作用。

dead.wood

n.（名词）
Dead branches or wood on a tree.
枯枝，死木：树上的枯枝或死木
One that is burdensome or superfluous.
无用人员，冗员：累赘的或多余的人
Nautical The vertical planking between the keel of a vessel and the sternpost, serving as a reinforcement.
【航海】 龙骨邦木，呆木：船的龙骨和艉柱之间的垂直板材，用来加固