Cheetah's Tail Inspires Model for Robot's Stability 猎豹尾巴启发机器人设计 If you speed your bicycle through a curve, you have to lean to the inner side in order to keep your balance. Many fast moving animals do the same, often with additi

发表于:2019-01-14 / 阅读(94) / 评论(0) 分类 VOA标准英语2014年(二月)

What do you think of the novel you just finished reading? I like it a lot. It has a very funny beginning, I think. It attracts your attention the moment you begin reading it. What do you like best about it? I like the plot. It's so full of twists and

发表于:2019-01-21 / 阅读(60) / 评论(0) 分类 英语口语900句