灰狗太笨了， 不会前后夹击
鸵鸟好像开始一直走直线，灰狗不好前后夹击。等没了几个，它才绕弯的
4只呢？ 不需要一起追上去！ 明显智商不如鸵鸟。
还有gray hound正确翻译是灰狗，不是灵缇(whippet)
The whippet is a British breed of medium-sized dog, of the sighthound type, related to the larger greyhound and the smaller Italian greyhound. Apart from the differences in height, the whippet closely resembles these two breeds; it has sometimes been described as "the poor man's greyhound".[4]