T.f.
[医] 结核菌素滤液
🗣️ 情景例句
He needs to work.
他需要工作。
This is my third year of college, I'm a junior.
这是我上大学的第三年，我是三年级学生。
Though a number of descents have been made, much of it still remains to be explored.
人们多次进入洞内探险，但至今尚有不少东西有待勘探。