chemical spray

• 化学喷雾

chemical spray的用法和样例：

例句

1. A chemical sprayed or dusted on plants to cause the leaves to fall off.
   落叶剂一种化学药剂，喷洒在植物上可使叶脱落
2. But even the mosquito has been subdued by attention to drainage and by chemical sprays.
   但甚至蚊子也由于我们注意排水和化学喷雾而已被抑制住了。