Nctc
[医][=National Collection of Type Cultures]国家标准菌库，全国典型菌种收集委员会
🗣️ 情景例句
I've been thinking about it for weeks now.
为这事我想了几个星期。
Don't mention it.
不必谢。
What was the date?
（昨天）是几月几日？