Potassium ethide
[化] 乙基钾
🧩 词语组成解析
potassium
[[pə'tæsiəm]]
n. 钾\\n[化] 钾K
[化物]乙基
🗣️ 情景例句
No, no. I'll do that.
不， 不。我自己来。
Can I go now?
可以走了吗？
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，