基本解釋n.鉛墜同根派生 plumment相關(guān)詞詞組短語(yǔ)短語(yǔ)nadir plumment 天底點(diǎn)對(duì)點(diǎn)器drum for the plumment wire 垂球絲卷筒plumment更多詞組