Diethylnitrosamine
二乙基亚硝胺
🗣️ 情景例句
Look, simply shape up, or ship out!
看，只有表现好些才可留下来。
Children enter school at the age of five,don't they?
孩子们在5岁时入学吗？
In vain they rush frantically round from place to place,
他们到处狂奔乱跑，