Alkron
对硫磷, 一六○五, 二乙基对硝基苯硫代磷酸酯
🗣️ 情景例句
Have you ever been to a buffet dinner?
你去吃过自助餐吗？
Aren't you dressed too formally?
你穿的不是太正式化了吗？
He gives the bank specimens of his signature,
他把自己签名的样本交给银行，