Macasphalt
马克地沥青混合料
🗣️ 情景例句
I can see that you've done this before.
我发觉你曾干过此事。
Honest men marry soon,wise men not at all.
老实的人早成婚，聪明的人不结婚。
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。