单词：armyworm
n. moth whose destructive larvae travel in multitudes
n. larva of fungus gnat that feed on cereals and other grains; they march in large companies in regular order when the food is exhausted
armyworm的用法和样例：
例句
- The extracts of Xanthium sibiricum had insecticidal effect on armyworm.苍耳提取物对粘虫具有一定的杀虫效果。
- On contrast, the anti-feeding effects of the extracts from petroleum ether and ethyl acetate to small vegetable-moth are smaller than those to armyworm.但对小菜蛾而言，石油醚萃取物和乙酸乙酯萃取物的拒食作用不如对粘虫作用明显。
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