aerodynamics
n[pl, usu sing v 通常与单数动词连用]
science dealing with the forces acting on solid bodies (eg aircraft or bullets) moving through air 空气动力学; 气体动力学.
living in a world in which undeclared aggression, war, hypocrisy, chicanery, anarchy and impending immolation are part of our daily lives, we all want a code to live by.