这是有史以来发明出的最受欢迎的球类运动。

This is the most popular ball gameever devised

本文以几种国内外近年研制的新型球类运动机器人为例，介绍了计算机视觉在智能机器人研究中的应用情况。

This paper introduced the outline of computer vision applications in intelligent robots, indicated by several new ball game robots developed in the world.

任何球类运动他都玩不好。

He was useless at any game with a ball.

研究显示，喜欢做球类运动、平板支撑和仰卧起坐的人报告称自己的慢波睡眠（深度睡眠）时间更长。

People who prefer ball sports, planking and situps report longer periods of slow-wave sleep, or deep sleep, it said.

football一词最初是指在地上而非马背上进行的球类运动。在那时，football并不一定要靠踢的，一些football长期以来都用手玩。

Some types of football had long involved use of the hands football originally meant an array of ball games played on foot rather than horseback, and didn't necessarily refer to kicking.

球类运动已经成为当今社会一个重要的组成部分。

Ball games have become an integral part of modern society.

球类运动的战术意识及培养

On the Sense of Tactics and its Cultivation in Ball Games

我喜欢足球，篮球以及其它一些的球类运动。

I like football, basketball and the other ball games.

最受欢迎的球类运动有棒球、足球和篮球。

The most popular sports are baseball, football and basketball.