Lactodensimeter
乳比重计
🗣️ 情景例句
He says it's to save the taxpayers' money,
他说这是为了要节省纳税人的钱，
I've made a reservation at the hotel you used last time.
我已预订了你上次住过的旅馆。
do in fact run out of energy in accordance with the second law of thermodynamics (whether the whole universe does so is a moot point at present).
也都会消耗完其能量（整个宇宙是否如此，目前尚有争论）。