There will be a written examination to complement the practical test.

会有一次书面考试来补充实践测试。

《柯林斯英汉双解大词典》

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And I think there is all sorts of different ways to learn that outside the classroom that complement the classroom. -Yes.

我认为，从许多事情中，我们都会了解到,正是课外活动,丰富了课内的学业。

普林斯顿公开课 - 人性课程节选

It sounds like you're discussing the lectures and the readings and you're really not.The section discussions are a complement to the lectures.

因为这听上去想是你们要讨论我讲的课和那些阅读材料,但却不是那样，讨论课是对我讲课的一个补充。

耶鲁公开课 - 旧约导论课程节选

Labour's boldest step has been to complement the internal market with an external one.

ECONOMIST: Health in Britain

Microsoft is selling business software and entertainment hardware (Xboxes) to complement its storage.

FORBES: Apple's iCloud and the Dilemma of the Walled Garden

In short, UUV present a new tool to complement and replace low-level functions of a submarine.

FORBES: Connect