Arthrolith
关节石
🗣️ 情景例句
The number's no longer in service.
这个号码现在是空号。
I like painting,but I wouldn't want it to be my life's work.
我喜欢油画，但是我不想要它是我一生的工作。
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，