VOA慢速英语2013.07.02 plants, leaves, better, problem, control

Rebecca949

Mr. Hoffman says plants with wider leaves seem to do better in shady environments. He also found that his potatoes did better in partial shade than in full sun.霍夫曼表示,宽叶植物在荫凉环境下似乎生长得更好.他还发现土豆在部分荫凉环境中比在充足日照环境中生长得更好.
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pesticide