Baird densitometer
[电] 贝尔德密度计
🧩 词语组成解析
n. 贝尔德（姓氏, 意为很会唱民谣的人）；贝尔德（美国德克萨斯州的一个城市名）
n. 光密度计\\n[计] 密度计
🗣️ 情景例句
Hello, this is ... What can I do for you?
喂， 我是……我能为你做点什么吗？
The smiles of a pretty woman are the tears of the purse.
美女的微笑就是钱包的泪水。
Up to now, historians have assumed that calendars came into being with the advent of agriculture, for then man was faced with a real need to understand something about the seasons.
历史学家迄今认为日历是随农业的问世而出现的，因为当时人们面临着了解四季的实际需要，