Laevoisometer
左旋性同质异构体
🗣️ 情景例句
Malcolm is on the TOPS team. Malcolm
是 TOPS的一员。
Which train do I take to Philadelphia?
去费城乘哪趟车？
Though the doctors did his best, the patient's recovery was slow.
尽管医生竭力医治，但病人恢复缓慢。