前面用an，因为它是元音因素开头的。
I hired an engineer to repair the computer.
我请了一名技师来修电脑。
The bridge was engineered by a famous architect.
这座大桥是由一位著名建筑师设计的。
They engineered a protest against the new policy.
他们密谋策划了一场反对新政策的抗议。
He's a computer engineer, designing programs for computers.
他是个计算机工程师 负责给计算机设计程序。
He's looking to secure a position as a computer engineer at a well-known technology company.
他希望在一家知名的技术公司找到一份计算机工程师的职位。
engineer前面不用A而是用AN，因为engineer是以元音e的发音开头的单词，所以用an。engineer中文意思是n. 工程师，设计师；（航班）机械师，（轮船）轮机长；技师，机修工；工兵；机车司机，火车司机；责任人
His father meant him to be an engineer.他父亲想让他当工程师。
