如所示的directed: adj. 1.有指导的;定向的。 2.【数学】标出(数、 ...be directed to: 指向,针对directed: adj. 1.有指导的;定向的。 2.【数学】标出(数、角、线段的)正负的。 directed learning directed study: 指导的学习backward directed: 方向向后的下载手机词典可随时随地查词查翻译