Stephen Hawking is one of the famous scientists in this century. He is now wheelchair bound and unable to feed himself or get in and out of bed alone. But he has refused to give in to the condition. Now he is regarded as one of the world's leading authorities on cosmology. Last year he was invited to China. He impressed us with his self-confident，humorous and witty conversations.
注释:
1) He is now wheelchair bound.他现在只能坐在轮祷上。
2) He has refused to give in to the condition.他不向目前这种状况屈服。
3)leading authorities on cosmology宇宙学的权威
4) He impressed us with his self-confident，humorous andwitty conversations.他自信、幽肤机智的叶话给我们留下了深刘的印象。
