Columbium tetroxide
[化] 四氧化二铌
🧩 词语组成解析
n. [化]铌
n. 四氧化物\\n[化] 四氧化物
🗣️ 情景例句
We want to leave on May 1st and return on May 8th.
我想五月一日走，五月八日回来。
His job is his whole life.
工作就是它的生命。
There are two other points to consider.
发传真要考虑另外两点。