Streptolysin
[机] 链球菌溶血素
🗣️ 情景例句
I have no definite ideas in that area right now.
在这方面目前我还没有具体的想法。
I'm feeling rather blue.
我觉得有些沮丧。
It seems that man was making a real effort to understand the seasons 20,000 years earlier than has been supposed.
看来人类早就致力于探索四季变迁了，比人们想像的要早20，000年。