Hjelmite
钙钽钇矿(原译名钙铌钽矿)
🗣️ 情景例句
Nice weather today, isn't it?
天气不错，是吧？
The editor is getting a story ready for print.
编辑在准备把记事付印。
He's been there for over two years. He's been there since two years ago.
他到校有两年多时间了。他两年前就到那儿学习了。