It could be they were accidentally ingested as the sauropods foraged for food, that they served no real purpose.
它们可能是在蜥脚类动物觅食时被误食的，没有真正的用途。
He foraged in the refrigerator for munchies.
他在冰箱里搜找零食。
They went and foraged accordingly, hunting through every cupboard and turning out every drawer.
他们就这样去找，搜遍了每一个碗柜，翻遍了每一个抽屉。
They foraged a pig for the feast.
他们为筵席搞到一头猪。
He foraged about in the cupboard.
这个玻璃杯应放在碗橱里。
She foraged about in her handbag, but couldn't find her keys.
她翻遍了手提包，就是找不到钥匙。
He foraged for wild fruits and berries and other edible plants.
他依靠野果和其他可吃的植物维持生命。
She foraged about in her handbag, but she couldn't find her ticket.
她在她的手提包里搜寻，但她没能找到她的票子。
He foraged about in his bag for a long time, but couldn't find the visa.
他在包里搜寻了很长时间，却没能找到签证。
With rain forests shrinking, hungry elephants foraged farmland, destroying crops.
随着雨林不断缩小，饥饿的象群闯入农田觅食，毁坏了庄稼。
Before the advent of the Gona toolmakers. The primates that inhabited the area were probably plant-eaters who foraged.
在戈纳石器制造者出现之前，生活在这里的灵长动物可能靠觅食植物生存。
Usually just their big nostrils appeared for a gulp of air as they foraged on sea grasses or swam slowly to greener underwater pastures.
一般，它们一边用大鼻孔大口吸气，一边觅食海草，或者慢慢地游向海底更嫩绿的草场。
The burial site shows ancient residents of Alaska foraged for fish, birds and small mammals - as well as large game, reported the journal Science.
科学杂志上的报道上称，埋葬地点显示阿拉斯加的古代居民除了觅食大型哺乳动物，也吃鸟类，鱼类和小型哺乳动物。
Nettles can be used in exactly the same way as spinach - in fact, almost any recipe containing spinach could use foraged nettles as an alternative ingredient.
荨麻叶可以和菠菜一样食用。事实上，几乎所有包含菠菜的食谱都可以用荨麻叶代替。
Things were so quiet, in fact, that we slept in the next morning, then foraged for blueberries in the bushes around the cabin to make blueberry-studded pancakes.
四周安静极了，我们一觉睡到第二天上午。 起床后我们到小屋外大肆采摘蓝莓来做蓝莓馅饼。
There is an old saying goes "Old plum, young peony, " the meaning is clearly: many flowers showing their beauty as freshness and tenderness, but plum blossom is treasure foraged vigorous.
园林业内有“老梅树、少牡丹”之说，意思很明确：很多花都以鲜嫩为美，梅枝却以苍劲为珍。
There is an old saying goes "Old plum, young peony, " the meaning is clearly: many flowers showing their beauty as freshness and tenderness, but plum blossom is treasure foraged vigorous.
园林业内有“老梅树、少牡丹”之说，意思很明确：很多花都以鲜嫩为美，梅枝却以苍劲为珍。
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