Niobate
铌酸盐
🗣️ 情景例句
Weight: eight pounds six ounces.
体重： 八磅六盎司。
What is the total circulation of this publication.
这家刊物总发行量多少？
It's a small blue case and it's got a zip.
是只蓝色的小箱子，上面有拉链。