Quilan
氟草胺
🗣️ 情景例句
... and I do need some advice on a difficult problem.
……我的确有一个难题要请教你。
To learn about words in dictionary
用词典学习单词
We continually wage war on them, for they contaminate our food, carry diseases, or devour our crops.
人类不断同昆虫斗争，因为昆虫弄脏我们的食物，传播疾病，吞噬庄稼。