n. 指示；方向；用法说明书（direction的复数形式）

n a line leading to a place or point

n the spatial relation between something and the course along which it points or moves

n a general course along which something has a tendency to develop

n something that provides direction or advice as to a decision or course of action

n the act of managing something

n a message describing how something is to be done

n the act of setting and holding a course

n a formal statement of a command or injunction to do something

n the concentration of attention or energy on something