Alkron
对硫磷, 一六○五, 二乙基对硝基苯硫代磷酸酯
🗣️ 情景例句
We really don't have to be overly concerned.
我们真的不需要过分担心。
I couldn't keep the appointment because I was sick.
我不能赴约因为我病了。
I go to school by bike every day.
我每天骑自行车上学。