五氯化磷 管制:what characteristic manners do you know of peoples ?Americans?Arabs?Chinese?

what kinds of characteristic must a charming man should have ? what characteristic manners do you know of peoples ?Americans?Arabs?Chinese? what characteristic manners do you know of peoples ?Americans?Arabs?Chinese? what characteristic manners do you know of peoples ?Americans?Arabs?Chinese? 2.)What is the main characteristic between High and Low Viscosity characteristic of old english distribution characteristic 101 population characteristic 的中文解释 be characteristic of什么意思 character和characteristic的区别