at a bound meaning in Chinese

一跃, 一跳

Their hearts went out of them at a bound towards extreme cases , when the subtle mental troubles of the less desperate among mankind failed to win their interest or regard
他们遇见特别的事情，就最容易引发他们的恻隐之心，而那些未曾陷入绝境的人，他们轻微的精神苦恼却很难引起他们的关切和关注。
Said the count , in the same tone in which he would have given an order to his servant . the messenger obeyed without the least hesitation , but rather with alacrity , and , mounting the steps at a bound , entered the hotel ; five seconds afterwards he was at the door of the room
伯爵说道，他的语气就象吩咐他的仆人一样，那信差竟毫不犹豫地服从了这个命令，而且还显得很高兴的样子，他蹦蹦跳跳地奔上台阶，窜进了旅馆。