http://www.pons.de/produkte/3-12-517841-X/(牛津大学出版社授权产品)
improper [美 ɪmˈprɑpər, 英 ɪmˈprɒpə] 形
1.1. improper (unseemly):
1.2. improper (indecent):
- improper suggestion/language
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- improper proposal
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2. improper (incorrect) 书:
- to make improper suggestions
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在《PONS词典》中的词汇