Arsonium compound
[化] 砷┹化合物
🧩 词语组成解析
[化] 砷┹; (曾称)\\n[医] 氢化砷基
🗣️ 情景例句
lots of things to do.
许多事情要做。
Thank you, if it's not too much trouble.
谢谢了，如果不是太麻烦的话。
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，