dud什么意思解释？

dud的复数形式为：duds...

dud的音标：dud的英式发音音标为：[dʌd]dud的美式发音音标为：[dʌd]...

He replaced a dud valve.他换掉了坏阀门。The mine was a dud.矿井废弃了。The new manager is a complete dud.新经理完全是个废物....

patch的近义词/同义词有：mend, fix, service, repair, mottle, service, fix, plan, repair, mend。vt.patch的近义词（修补;修理）：mend, fix, service, repair。patch的近义词（其他释义）：mottle, service, fix, plan, repair, mend。...

The emission of gases such as carbon dioxide should be stabilised at their present level.二氧化碳等气体的排放应该稳定在当前水平。Eventually my weight stabilised at seven and a half stone after dropping to a low of five and a half stone.我的体重...

v.踩，踏( tread的过去式 )，踩成，踏出，步行于...

“致力”的拼音为：zhì lì...

铜氨液...

int.& n.& v.喂，哈罗...

discommodity的音标：discommodity的英式发音音标为：[ˌdɪskə'mɒdɪtɪ]discommodity的美式发音音标为：[ˌdɪskə'mɒdətɪ]...

cellulipetal的音标：cellulipetal的英式发音音标为：[selu:lɪ'petl]cellulipetal的美式发音音标为：[selulɪ'petl]...

“铃锤”的拼音为：líng chuí...

“板”的反义词：活。...

bookmarks的音标：...

adj.粘土的，含粘土的，似粘土的...

“推断出”的英语可以翻译为：[医]educe，extract ...

n.芬兰...

obsolete的现在进行时为：obsoleting...