Chromotypography
彩色铅印术; 彩色凸版印刷术
🗣️ 情景例句
I'm sorry you have to leave so soon.
很遗憾你不能多呆会儿。
I'm really sorry about it.
我真是非常抱歉。
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。