名词
中文翻译：除草剂
同义词：
['herbicide', 'weed-control agent']
例句：
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1.The farmer used a weed-killer to remove the weeds from his field.
农民使用除草剂来清除他的田地上的杂草。
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2. The weed-killer spray was effective in killing the weeds.
这种除草剂喷雾对杀死杂草非常有效。
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3. The weed-killer was not suitable for use on plants that were sensitive to it.
这种除草剂不适合用于对它具有敏感性的植物上。