Radiouranium
射铀
🗣️ 情景例句
No admittance except on business.
非公莫入。
A thousand words will not leave so deep an impression as one deed.
千言万语不如一个行动。
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。