常見例句雙語例句I'm sure you coul spend more time preparing for those.我敢肯定你需要花很多的時間為那些測驗準(zhǔn)備。She coul not deny the justice of Darcys description of her sister.她不能否認(rèn)，達西對她姐姐的描述是公正的。With chemical oxidizing and subsequently paint ing of aluminum and its alloy, adhesion of aluminum substrate with coatings coul d be greatly improved, as well as corrosion resistance.鋁及鋁合金化學(xué)氧化后涂漆，可大大提高基體與涂層的結(jié)合力，并增強鋁材的抗蝕能力。 返回 coul