550. call…in question 對(duì)…表示懷疑

549. be qualified in 在某種科目或?qū)W科上合格be qualified for 在某種職業(yè)上合格

548. to the purpose (=useful for one’s purpose)得要領(lǐng)的, 中肯的

547. on purpose(=by intention, deliberately)故意

546. in public 公開地, 當(dāng)眾

545. provide for 為…做準(zhǔn)備

544. be proud of 為…自豪

543. protect…from 阻止..不受,保護(hù)不受

542. in proportion to 與…成比例

541. prohibit…from (=forbid) 禁止, 阻止