systemic insecticide造句

"systemic insecticide"是什么意思

造句与例句手机版

Systemic insecticides have shown particular promise .
内吸杀虫剂看来特别有效。
As preventive, spray plants with systemic insecticide or fumigate them regularly .
作为预防措施，要用内吸杀虫剂对植物定期喷洒，或熏蒸。
It's difficult to see systemic insecticide in a sentence. 用systemic insecticide造句挺难的

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