美[klin]
adj. 清潔的;整齊的;新的;正派的
vt.& vi. （使）清潔;變幹凈;除去…的灰塵;使…幹凈
vi. 清掃
[例句]A blight has already descended on the clean tech industry.
厄運已經降臨到了清潔科技產業。
clever 英['klev?(r)]
美[?kl?v?]
adj. 聰明的，靈巧的;英俊的，風采優雅的;性情溫良的;油腔滑調的
最高級:cleverest;比較級:cleverer
[例句]Clever competitors will seek to grab opportunities that otherwise would have been yours , weakening your overall franchise.
聰明的競爭對手會抓住本屬於妳的機會，削弱妳的整體運營。