Celmide
二溴乙烷
🗣️ 情景例句
Mrs. Ellen Stewart has taken an early lead.
Ellen Stewart太太初步领先。
In universities,students train to become teachers and engineers.
在大学里，学生们被训练成为教师和工程师。
She struck the keys too hard and two of the strings were broken.
她在击琴键时用力过猛，损坏了两根琴弦。