The history of tennis goes all the way back to ancient Egypt and Persia where pictures indicate a type of game in which a ball was stroked1 over a net was played.

网球运动的历史要追溯到古埃及和波斯。那里的一些图片显示，当时人们玩一隔着网来回击球的游戏。到了19世纪，现代网球运动正式在英国诞生，一位名叫梅杰·瓦尔特·温菲尔德的男子开启了这一历史。

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After the two cells fuse, the site goes on, they divide over and over again to create a ball of cells called an embryo that goes on to become a baby that grows inside the mother for nine months.

BBC: rainbow