Liquidensitometer
液体密度计
🗣️ 情景例句
You haven't changed much in fifty years.
你五十年来没有什么变。
It depends on the quantity ordered.
这要根据所订的数量而定。
The woman was a visitor. She did not live in London. She lived in the country.
这老太太是位游客，不住在伦敦。