Antikathode
[医] 对阴极(X线管的)
🗣️ 情景例句
There's nothing's as troublesome as a naughty clild.
没有东西比淘气的孩子更麻烦了。
Come on!
得了吧！
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，