Radioactive calcium
[医] 放射性钙
🧩 词语组成解析
🗣️ 情景例句
Different kinds of activities, such as commenmorative meetings, planting trees,
举行各种各样的活动，例如召开纪念大会，植树造林，
He is hurrying to his office.
他赶着去上班。
Please make sure I get an invitation.
请记住寄张请帖给我哦。