Niobyl
铌氧基
🗣️ 情景例句
I'm leaving on Northwest flight 102 on Sunday the thirteenth.
我在星期天、也就是十三号乘坐西北航空的102航班离开。
I thought about going to my sister's. How about you?
我想去姐姐家玩，你呢？
Take it easy.
别紧张。