他们试图把鱼叉刺进鳐鱼体内，以防它猛摆那蜇人的尾巴报复。They tried to get the harpoon into the ray before the sting tail came lashing over to retaliate.那些船上有许多鲭鱼，还有几条鳐鱼。Boats had plenty of mackerel and a few skate.摘要目的: 研究一种软骨鱼系动物 ( 孔鳐 ) 自身血红蛋白成份的相...
She was nervous and kept scanning the crowd for Paul.她很紧张，眼睛不停地在人群中搜寻保罗。She sat scanning the yellowing pages.她坐着浏览发黄的书页。A new technological marvel was invented at Cambridge University in England, the scanning electron mi...