a good knowledge of

• A good knowledge of english will improve your chances of employment
  英语好将有助于增加你们的就业机会。
• A good knowledge of english will improve your chances of employment
  英语好将有助于你们增加就业的机会。
• You should also have a good knowledge of database , xml , and xslt
  还应当对数据库、 xml和xslt有很好的了解。
• The speaker had a good knowledge of his subject but could not put it across
  报告人对所讲的问题了解得很透彻,但就是讲不清楚。
• The speaker had a good knowledge of his subject , but could not put it across
  报告人对所讲的问题了解得很透彻,但就是讲不清楚。
• Only when you have acquired a good knowledge of grammar can you write correctly
  只有当你拥有了完善的语法知识,你才能正确地写作
• Unless you have a good knowledge of astronomy , which i do not , this is difficult
  除非你有很好的天文学知识，我并不懂天文学，那就很困难。
• Trained experience ; having a good knowledge of quality , english , vocation education
  培训经历：有品保专业知识、英语、职业化教育方面知识培训。
• The zentrale mittelstufenprfung demonstrates that you have a good knowledge of standard german
  简称zmp的证书，等于说您拥有的标准德语能力已很好。