'Twitchers,'as enthusiasts are sometimes called, often travel long distances at great expense to catch just a glimpse of even a single rare species through their binoculars. 作为发烧友有时被称作,往往长途跋涉巨大牺牲赶上刚才看到,即使一个单一的稀有物种通过他们的望远镜。
Since fast-twitch fibres are more powerful than slow-twitch cells, the fast twitchers swing into action at slow cadences, when high muscular forces are required to move the bike along rapidly. 因为快收缩肌肉比慢收缩肌肉更有力,快收缩肌肉在低速的情况下工作,需要更多的肌肉力量来推动单车前进。