What colour is your marker?

你的记号笔是什么颜色的？

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Simulation test of hybrid rice production demonstrated that the purity of hybrid rice would be improved greatly by using leaf colour as a marker to eliminate the false hybrid rice at early stage.

模拟杂交稻生产和制种繁种，表明利用苗期叶色标记结合人工去杂，可有效提高田间纯度。

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The first group had their plumage colour enhanced with a marker pen.

第一组鸟的羽毛被用彩笔加强了色彩。

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The first group had their plumage colour enhanced with a marker pen.

ECONOMIST: Male birds cannot afford to relax their standards