understand/understanding
understand/ˌʌndəˈstænd/vt.&vi.(understood, understood) 1.懂，明白，理解（作vt.时跟名词/代词、v-ing、从句，不能直接跟不定式连用，但有时可跟带连接副词的不定式）：understand ···
undertake
undertake/ˌʌndəˈteik/vt.(undertook /ˌʌndəˈtuk/, undertaken /ˌʌndəˈteikən/) 1.从事，着手，承担(跟名词或不定式)：undertake a journey (task)去旅行（从事一项工作）；undert···
undesirable
undesirable/ˌʌndiˈzaiərəbl/adj.不合需要的；令人不快的；讨厌的：undesirable behavior令人讨厌的行为；the drug's undesirable side effects药的不良副作用；a situation which is ···
underway
underway/ˈʌndəˈwei]/adj.&adv.在进行中的：Road and bridge construction is underway.公路和桥梁正在建设中。The train has had to stop briefly, but it should beunderwayagain soo···
underwear
underwear/ˈʌndəwɛə/n.［u］内衣：thermal(warm) underwear保暖（暖和）内衣；ladies’/women’s (men’s)underwear女士（男士）内衣He had removed his underwear.他已脱去了内衣。He was···
undo
undo/ˈʌnˈdu:/vt.(undid /ˈʌnˈdid/, undone /ˈʌnˈdʌn/) 1.解开，松开：undo a knot(button)解开结子（钮扣）；undo a parcel打开包裹2.取消，撤消；毁掉：undo his post撤消他的职位T···
undoubted/undoubtedly
undoubtedly/ʌnˈdautidli/adv.必定：Undoubtedly, our team will win the champion.毫无疑问，我们队将获得冠军。You are undoubtedly right.你无疑是正确的。undoubtedadj.无可争议的
undress
undress/ʌnˈdres/vt.&vi.(［反］dress)脱衣服，给…脱衣服：undress oneself自己脱衣服I undressed and went to bed.我脱下衣裳去睡觉。She undressed the baby and put him in his bath.···
undutiful
undutiful/ˈʌnˈdju:tifəl/adj. 1.未尽职的，不恭敬的，不孝的：an undutiful son不孝之子2.无疑的，不可避免的：21st century, it isundutifulthat enterprises will face all kinds of pro···
