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usefulness的音標(biāo):usefulness的英式發(fā)音音標(biāo)為:['ju:sf?ln?s]usefulness的美式發(fā)音音標(biāo)為:['jusf?ln?s]...
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There are doubts about the usefulness of these tests.這些試驗(yàn)是否有用,人們有所保留。I was persuaded of the usefulness of his new device.我相信了他的新裝置的實(shí)用性.The index adds appreciably to the usefulness of the book.索引明顯地增加了這本書的實(shí)用價(jià)值....
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n.有用,有益,有效,效能...
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Usefulness includes the fact the negatives have been calibrated.所謂有用,是指在底片上要有標(biāo)度.The theory is of limited usefulness.這個(gè)理論用途有限。The report is of potential usefulness to the government.這個(gè)報(bào)告可能對(duì)政府有用。There are doubts about the ...