Protactinides
镤化物
🗣️ 情景例句
We have several package tours you may choose, from ten days to three weeks in Europe.
我们有几套欧洲旅游计划选择，时间从10天到3个星期。
Swimming promotes health.
游泳有益健康。
I wonder if it is possible to arrange shopping for us.
我想能否在我们访问结束时为我们安排一点时间购物。