Dideuteride
二氘化物
🗣️ 情景例句
in the public school
在公立学校中
This is a schedule.
这是一张时间表。
It is thought that they arrived more than 30,000 years ago by crossing a land bridge from Asia to America.
他们被认为是在3万多年以前从亚洲跨越一座陆桥来到美洲的。