I'll have you know that I'm a qualified engineer.
我将让您知道我是一位具有资格的工程师。
Be sure to have all design performed by a qualified Engineer and installation made by properly trained personnel.
要确保所有设计都由有资格认证的工程师进行,所有安装都由经过正确训练的人员进行。
Why do you think you are qualified for being a communications engineer?
你凭什么认为你可以胜任一名通讯工程师?。
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