Gravimetroscope
液体蒸发速度测定器
🗣️ 情景例句
Eight o'clock.
八点钟。
After forty years teaching English he thinks it's time to call it a day.
他教英语四十年，认为该退休了。
All at once, I noticed that my wife seemed to be filled with alarm.
突然，我注意到妻子十分惊恐。