Quadrivalence
n. 四价\\n[医] 四价
🗣️ 情景例句
After the marathon, most of the competitors looked all in.
跑完马拉松，大多数参加比赛的人显得疲劳不堪。
The shortest answer is doing.
最简短的回答就是做。
Again, you may find the English words Made in China, or Made in Japan, or even Made in Germany.
你也许又会发现有“中国制造”或“日本制造”甚至“德国制造”的英语字样。