Minvar
敏瓦尔低膨胀系数合金铸铁
🗣️ 情景例句
Is it too early to call Mr. Carlson?
现在打电话给Carlson先生会不会太早了？
Have you ever thought about a career in the medical profession?
你曾经在医药专业考虑职业吗？
The meeting was scheduled for two hours, but it is not over yet.
会议原定了两个小时，不过现在还没有结束。