英语词汇“know one's business”的读音、翻译、释义、用法及例句-智慧网

词汇	know one's business
释义	know one's businessknow one's business1.■精通业务Imes knows his business because he has been in this line for years.因为艾姆斯干这行多年, 所以他精通业务。
随便看	drill spindle drill spindle support drill spindle with rack drills steel sharpener drill stand drill steel drill stem drill stem test drill-stem test drill stem testing tools drill stock drillstock drill stop drill string drill string behavior drill string compensator drill-string tripping drill tap drill through drill thrust drill tip drill tower drill tripod drill truck drill unit

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