Mabelle
n. 玛贝尔（钻饰有限公司）
🗣️ 情景例句
I'm thirty.
我三十岁。
How long will the sale last?
折价销售多久？
Some of the bigger firms are engaged in researches which are of such general and fundamental nature that it is a positive advantage to them not to keep them secret.
某些大公司进行的研究属于一般和基础性的研究。因此不保密对他们才有利。