青年中文plesiosaurs的意思
plesiosaurs中文翻譯：
n.蛇頸龍；蛇頸龍類
plesiosaurus───n.蛇頸龍（等于plesiosaur）
Plesiosauria───n.[古生]蛇頸龍目；[古生]蛇頸龍亞目
Ichthyosaurs, indeed, looked somewhat like dolphins, though plesiosaurs-with their long necks and diamond-shaped paddles-were unlike anything now alive.───看起來有些像海豚的魚龍，和縱然有長頸和菱形狀腳槳的蛇頸龍都不與如今存活的物種相似。
Unable to fly or walk, Hesperornis needed to be wary of predators: sharks and plesiosaurs at sea, dinosaurs and pterosaurs on land.───由于不能飛也不能步行，黃昏鳥需要警惕掠食者們：水中有鯊魚和蛇頸龍，岸上有恐龍和翼龍。
THE Mesozoic land was dominated by dinosaurs. At sea, though, the most abundant reptiles were the ichthyosaurs and plesiosaurs.───中生代的陸地由恐龍所統治。然而，在海上，為數最多的爬行動物是魚龍和蛇頸龍。
At sea, though, the most abundant reptiles were the ichthyosaurs and plesiosaurs.───但是在海里，最繁盛的爬行動物要屬魚龍和蛇頸龍了。
It would mean plesiosaurs not only occupied a similar ecological niche to whales, but behaved like them, too.───這意味著蛇頸龍不僅占據一個和鯨魚類似的生態位，行為也相仿。
Instead, Dr O'Keefe believes he has discovered evidence that plesiosaurs, too, gave birth to live young.───相反，奧基夫博士相信他發現了蛇頸龍也是胎生的證據。
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.