名词
中文翻译：Unknown
同义词：
['systemic herbicide', 'systemic fungicide', 'systemic insecticide']
例句：
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1. The use of systemicpesticides is strictly regulated toprevent environmental contamination.
使用系统性农药受到严格监管，以防止环境污染。
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2. The farmersare using systemic pesticides tocontrol the weeds in their fields.
农民们正在使用系统性农药来控制他们田地里的杂草。
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3. The systemic pesticide sprayed on the crops has significantlyreduced the number of pests.
喷洒在农作物上的系统性农药已经显著减少了害虫的数量。