敏捷 quick; nimble; sharp; agile 敏捷的智力 a keen intelligence; 敏捷机智 quick-witted and sagacious; 动作敏捷 be quick in movement; 举动敏捷 as nimble as a squirrel; 反映敏捷 a quick response; 他文笔敏捷。 he has a ready pen. 他虽上了年纪, 思维还很敏捷。 he's old but his mind is still sharp
迅速 rapid; swift; speedy; prompt 迅速取得成效 produce speedy results; 迅速传开 spread like wildfire; 迅速作出决定 come to a prompt decision; 动作迅速 swift in action; quick-moving; 发展迅速 be expanding by leaps and bounds; 反应迅速 have a swift response; 他判断迅速。 he is swift with his judgments
It will be also really fast , agile , dangerous , for those who disturb it , and should reflect a kind of intelligence ( not just a dumb fish ) 对于打扰这种生物的人来说,它也是真正迅速,敏捷,危险的,而且它应该是反映了一种智力(不仅仅是一个不会说话的鱼) 。