Columbium pentafluoride
[建] 五氟化铌
🧩 词语组成解析
n. [化]铌
五氟化物
🗣️ 情景例句
In North America when people meet each other for the first time.
在北美，当人们第一次彼此见面时。
To sum up, he agrees with us.
总而言之，他赞成我们。
The hunt went on for several weeks, but the puma was not caught.
搜寻工作进行了好几个星期，但始终未能逮住那只美洲狮。