Nitroguanidine
n. [化] 硝基胍
🗣️ 情景例句
Thanks, Ellen.
谢谢，Ellen。
In university, students are trained to become doctors and nurses.
大学的学生被训练成为医生和护士。
He had been there for nearly ten hours.
他已经在烟囱里被困了将近10个小时。