"up to" 含有 "最高 (maximum)" 的意思.所以,"Attaining speeds of up to" 的意思便是 "速度最高可达",相当於 "Attaining a top speed of".
如果把 "up to" 省去,改写成 "Attaining a speed of",那麼,它的意思便变成 "速度达到了多少多少".这样,我们便只知道那只猎豹当时的速度是多少,但不知道它的最高速度是多少.
Attaining speeds of up to 60 miles per hour,cheetahs are per
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