名词
中文翻译：多年生阔叶杂草
同义词：
['perennial weed', 'perennial grass', 'perennial herb']
例句：
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1. The farmer has been trying to control the perennial broadleaf weeds in his fields.
这位农民一直在试图控制他田地中的多年生阔叶杂草。
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2.The gardener has been struggling with the perennial broadleaf weeds in the flowerbeds.
园丁一直在努力解决花坛中多年生阔叶杂草的问题。
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3. The farmers have been using a new chemical to kill the perennial broadleaf weeds in their fields.
农民们正在使用一种新的化学物质来杀死他们田地中的多年生阔叶杂草。