In graphite sheets, carbon atoms bond together in rings.石墨层中的碳原子相互连接形成碳环。He crunched the sheets of paper in his hands.他把那沓纸揉得嚓嚓响。The wood was cut into large sheets of veneer.木料被锯成大块的薄板。...
The military on both sides are involved in intense activity.双方的武装力量都有密集动作。Consensual sexual contact between two males can be a criminal activity.两名男性之间发生的双方自愿的性接触可能会构成犯罪。Business is a competitive activity. It is very fie...