Phenanthrylene
[化] 亚菲基
🗣️ 情景例句
sacrifices have to be made by one partner from time to time.
总要有一方必须不时做些牺牲。
Prove thy friends ere thou have need.
需要朋友之前，先要加以考验。
What was the population of the more developed countries in 1950?
1950年较发达国家的人口是多少？