Lactodensimeter
乳比重计
🗣️ 情景例句
You always know the right thing to say.
你说话得体。
Mrs. Hughs, this is Peter Brown.
休斯太太，这是彼得i布郎。
OK. And we'd better ask Mom whether it's cheap enough!
好的。我们最好是问问妈妈价钱是否便宜！