Fluorbaryt
荧石
🗣️ 情景例句
Lacks courtesy is ill-mannered.
不礼貌，举止不当。
I love that shirt.
我喜欢这件衬衫。
They had a definite meaning, for they were as near as early man could get to writing.
它们有着一定的含义，因为它们已接近古代人的文字形式。