Rfms
[化] 射频质谱仪
🗣️ 情景例句
People who take less exercise seem more vulnerable to illness.
缺少运动的人对疾病的抵抗力就差。
How often did I tell you not to speak so loud?
我告诉你多少次不要讲话这么大声?
This race, which went on for exactly four exactly four months, was the last of its kind.
这场比赛持续了整整4个月，是这类比赛中的最后一次，