从理论到实践from: from above [below] 自上[ ...theory: n. 1.理论,学理,原理。 2.学说,论说 (opp. ...practice: vt.,vi. 〔美国〕=practise. practice theory: 练习说theory and practice: 理论与实际下载手机词典可随时随地查词查翻译