Radium cannon
[医] 镭炮, 镭管
🧩 词语组成解析
🗣️ 情景例句
Maybe I can help. Tell me what it is, Susan.
也许我能帮忙。说给我听听 ，Susan。
I never used to oversleep.
我过去从未睡过头。
The settlers built railways across the plains and began to hunt even more bison.
殖民者在平原上修起了铁路，于是开始猎取更多的野牛。