plesiosaurs信息详情
n.蛇颈龙；蛇颈龙类
plesiosaurus───n.蛇颈龙（等于plesiosaur）
Plesiosauria───n.[古生]蛇颈龙目；[古生]蛇颈龙亚目
Ichthyosaurs, indeed, looked somewhat like dolphins, though plesiosaurs-with their long necks and diamond-shaped paddles-were unlike anything now alive.───看起来有些像海豚的鱼龙，和纵然有长颈和菱形状脚桨的蛇颈龙都不与如今存活的物种相似。
Unable to fly or walk, Hesperornis needed to be wary of predators: sharks and plesiosaurs at sea, dinosaurs and pterosaurs on land.───由于不能飞也不能步行，黄昏鸟需要警惕掠食者们：水中有鲨鱼和蛇颈龙，岸上有恐龙和翼龙。
THE Mesozoic land was dominated by dinosaurs. At sea, though, the most abundant reptiles were the ichthyosaurs and plesiosaurs.───中生代的陆地由恐龙所统治。然而，在海上，为数最多的爬行动物是鱼龙和蛇颈龙。
At sea, though, the most abundant reptiles were the ichthyosaurs and plesiosaurs.───但是在海里，最繁盛的爬行动物要属鱼龙和蛇颈龙了。
It would mean plesiosaurs not only occupied a similar ecological niche to whales, but behaved like them, too.───这意味着蛇颈龙不仅占据一个和鲸鱼类似的生态位，行为也相仿。
Instead, Dr O'Keefe believes he has discovered evidence that plesiosaurs, too, gave birth to live young.───相反，奥基夫博士相信他发现了蛇颈龙也是胎生的证据。
It would mean plesiosaurs not only occupied a similar ecological niche to whales, but behaved like them, too.
But the newfound plesiosaur is thought to have been a pliosaur, and pliosaurs were different from other plesiosaurs.
In which case, it is impossible to see how the plesiosaurs could obtain sufficient quantities of food to survive.