Hematoglobin
血红蛋白
🗣️ 情景例句
Collecting matchsticks was fun, until that fateful day one of them caught alight.
收集火柴是一种乐趣，除非一天其中一根火柴不幸燃烧起来。
To drop
掉下
Spring is the best season of the year.
春天是一年里最好的季节。