Decca
n. 台卡导航系统
🗣️ 情景例句
Right.
好的。
Playing with fire!
找死！
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。