For example, maybe you will mark main ideas in yellow, important details in blue and new words in orange.

例如，你可以用黄色标出主要思想，用蓝色标出重要细节，用橙色标出生词。

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Students mark the main ideas and important details with a pen or pencil, yellow or blue or orange.

学生们用黄色、蓝色或橙色的钢笔或铅笔标出主要思想和重要细节。

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The Netherlands was a sea of orange today, millions of people adorned that color to mark a historic moment in royalty.

今天，荷兰陷入一片橙色的海洋，数百万民众用这个颜色纪念皇室的历史时刻。

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The Twelfth of July Orange Order parades mark the victory of the Protestant Prince William of Orange over the Catholic King James II at the Battle of the Boyne in 1690.

BBC: NEWS | UK | Northern Ireland | 80 officers injured during riot

Like other rescue workers whose job it is to venture underground, Angeli and Steelman spray orange paint to mark the places they have searched.

CNN: workers

The marches, commonly referred to as the Orange Walk, are celebrations which mark Prince William of Orange's victory over King James at the Battle of the Boyne in 1690.

BBC: Orange parades 'pass peacefully'