我们的祖先是草食动物，因此需要强壮的磨牙来混合和咀嚼植物。
Our ancestors, known to be herbivores, needed strong molars for mashing up and chewing plant material.
而有强壮颌骨的动物，如大猩猩和猩猩，则适应吃那些需要很多咀嚼的食物。
Animals with robust jaws, like gorillas and orang-utans, have long been known to be adapted to eating foods that require a lot of chewing.
依据该动物的颌骨计算表明，它能以15万牛顿的力度把猎物咬伤，咀嚼力度是霸王龙的四倍。
Calculations based on the animal's jaw bones suggest it could have bitten into its prey with a force of 150 kilonewtons, or four times the force thought to be exerted by the jaws of a T. rex.
这些纹路能告诉科学家们这些动物可能是怎样咀嚼食物的，而牙齿上并没有坑坑洼洼的小坑，这个迹象告诉我们鸭嘴龙吃什么。
While the scratches told the scientists how the animal may have chewed, the lack of pit marks on the teeth suggested what the hadrosaur was eating.
我们不知道，这个袋子已经被动物咀嚼了很多次，沦落在这座非常古老的建筑中已经至少几个月的时间。我们不知道袋子里有这些东西。
Unbeknownst to us, this bag that was all chewed up from animals or moths or something that had gotten trapped in a very old building, contained these items.
按照动物的直觉，把肉丸吃掉的最好方法，是把它整个放到嘴里然后咀嚼。
According to animal instincts, the best way to eat it is to put the entire thing in your mouth and chew.
在你为这些仓鼠轮工厂的照相之前，这些动物必须做的全部事情就是用力咀嚼牠们的食物——专门浓缩的植物性废料，然后排出除粪便。
Before you get images of hamster-wheel factories of, all the animals have to do is munch on their diet of specially enriched plant waste, and then poop it out.
香草美味的护牙小精灵咀嚼片，有趣可爱的动物形状，还含有天然护牙全食物的混合营养素。
Delicious vanilla tooth Fairy Chewables, in fun animal shapes, also contain a targeted whole food blend of natural tooth-friendly nutrients!
热带的雨林野生动物图片。深红色金刚鹦鹉被捕捉大声咀嚼一些点心在巴西的亚马逊热带雨林。
Gallery: Tropical forest Wildlife a scarlet macaw is caught munching a snack in Brazil's Amazon forest.
热带的雨林野生动物图片。深红色金刚鹦鹉被捕捉大声咀嚼一些点心在巴西的亚马逊热带雨林。
Gallery: Tropical forest Wildlife a scarlet macaw is caught munching a snack in Brazil's Amazon forest.
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