Monoisotopic
单一同位素的
🗣️ 情景例句
Hi. Michelle,
嗨， Michelle，
He is also very fond of playing tennis and manages to find time for a game twice a week.
他非常喜欢打网球，每周总要抽时间打两次。
The student did in an archway nearby where he could watch and hear everything that went on.
那个学生躲在附近一拱形的门廊里，在那儿可以看见、听到现场发生的一切。