Gravimetroscope
液体蒸发速度测定器
🗣️ 情景例句
I've only been waiting for an hour.
我已经等了一个小时了。
Is the coastal plain good for farming?
沿海的平原对耕作有好处吗？
There's no need for that. We'll have dinner another time.
不必为那件事惭愧。我们改个时间再共进晚餐吧。