Cohn's solution
[医] 孔恩氏溶液(培养酵母菌)
🧩 词语组成解析
🗣️ 情景例句
Those are the rules and regulations, and we have to abide by them.
这些就是这儿的规矩， 大家都应该遵守。
The two parties involved in a contract have the obligation to execute the contract.
合同双方有义务履行合同。
In the beginning they used to carve Chinese characters on stones to record important dates in history.
开始时，他们常把汉字刻在石头上，记载历史上重要的日期。