你怎么能把速度拉出来

[@hongfanzhan8260]

谢谢小韩老师。👍👍👍

[@learnwithmeonline5161]

讲得真好，清清楚楚，没有一点废话👍

[@learnwithmeonline5161]

说得太实在了，心静以致远！真正的教练！

[@生寶黃]

很好的教學 收穫多多

[@physicsandmathtutor4008]

Please add english subtitles. Your videos look very helpful but I can't understand the instructions 😢