plesiosaurs

基本解释

• 蛇颈龙类

同根派生

英汉例句

• Plesiosaurs had long necks that they used to snatch small fish from the water.
  蛇颈龙有长颈，用来捕捉水中的小鱼。
• Pliosaurs had very short necks, and skulls more adapted to kill larger animals, possibly even ichthyosaurs and plesiosaurs.
  上龙颈部很短，它们的头骨更适于将大型动物如鱼龙和蛇颈龙致于死地。