Columbium oxide
[建] 氧化铌
🧩 词语组成解析
n. [化]铌
oxide
['ɑksaɪd]
n. [化]氧化物;
🗣️ 情景例句
and tell him you're coming?
告诉他你要去吗？
If two men ride on a horse, one must ride behind.
两人同骑一马，必有一人在后。
While two detectives were keeping guard at the door, two others opened the parcel.
这时两个侦探把住门口，另外两个侦探打开了包裹。