Radiometallography
射线金相学
🗣️ 情景例句
Do you want a state-of-the-art machine?
你想要台配置最好的机器吗？
A wise man thinks all that he says, a fool says all that he thinks.
智者思其所言，愚者言其所思。
Good morning, class.
同学们，早上好。