单词：insect repellent
insect repellent的用法和样例：
例句
- Insecticides are widely used for controlling most insect pests.杀虫剂广泛应用于防治大多数害虫。
- For several years in sub-Saharan Africa, the Global Fund and other groups have been paying for bed nets treated with long-lasting insect poison.几年来，在撒哈拉沙漠以南地区，全球基金会以及其它组织一直在为当地居民免费提供用长效杀虫剂处理过的蚊帐。
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