The original paddy art was formed by using two varieties of rice plants, one with dark purplish stalks and the other bright green.
最初的稻田艺术利用了两个品种的植物茎干，一种是深紫色，另一种是亮绿色。
The team made the discovery while hunting for genes that boost heterosis, the phenomenon by which cross-breeding two varieties of plants produces more vigorous hybrid offspring with higher yields.
研究团队在寻找促进杂交优势的基因的时候发现，将两种植物杂交出的更具优势的子代，其产量更高。
Plants on a planet with two sunlike stars could need protection against too much radiation—they might evolve their own UV-blocking sunscreens.
但是，如果有一颗类似地球的行星，同时被两个太阳照射，就像科幻小说里的那种场景，植物又会是什么样子呢？
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