Columbous
[建] 三价铌, 亚铌
🗣️ 情景例句
Scared? Why?
紧张？ 为什么？
Tractors have revolutionized farming.
拖拉机使耕作有革命性的变化。
No wonder people say that computers are taking over the world.
难怪有人说电子计算机正渐渐接管世界。