a轻轻的我走了,正如我轻轻的来。 Gently I walked, just like I gently.[translate] a小男孩就爱把东西乱扔 The young boy throws on the love the thing[translate] aWITHOUT FAMILY,IT MEANS WE LOSE THE PEOPLE THAT WE CAN RELY ON 不用家庭,它意味我们失去我们可以依靠的人民[translate] ...
Average speed is the speed of a person over an entire interval of movement. To calculate average speed you use the change in their position divided by the change in time, s = change in d / t, where s is speed, d is distance and t is time....
Twenty years ago, while agraduate studentat Cambridge University, Ratti walked the route between his residential college and his departmental office nearly every day. One day, he realized that he was actually taking two different routes—one on to the way to the office and a slightly different ...