Tetrag
正方晶的, 四方晶的
🗣️ 情景例句
Keep a small English dictionary with you at all time.
随身携带一本小英文字典。
Who is the auther of this novel?
谁是这本小说的作者？
Last November it was Class 3's turn.
去年11月，轮到3班去参观了。