交通灯已由红变绿。

The lights changed from red to green.

《牛津词典》

立春之后，中国的一切都变绿了。

After Start of Spring, everything turns green in China.

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虽然春天天气温暖，树叶变绿，但没有青团的味道，这个季节就不完整。

Even though there is warm weather and green leaves in spring, the season wouldn't be complete without a taste of qingtuan.

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They are made of organic matter:the same rules, the same laws of chemistry that apply to what makes this laser glow green apply to what makes these photodetectors work.

而是由有机物制作的，同样的规律，它与应用于让激光的光芒变绿,以及使这些光电探测器工作,的化学是一样的规律。

麻省理工公开课 - 固态化学导论课程节选