短語(yǔ)詞組用作名詞 (n.)動(dòng)詞+～fill a vacuum 填補(bǔ)真空produce 〔create, cause〕 a vacuum 產(chǎn)生〔制造〕真空形容詞+～low 〔rough〕 vacuum 低真空fine 〔high, perfect〕 vacuum 高真空短語(yǔ) 返回 vacuums