Sulphur isotopes ratios as an indicator of mammal diets and migrations

有我们吃过的食物和我们在骨骼和牙齿中储存的地方的记录。这些记录被称为同位素签名。它们之所以存在，是因为我们的骨骼和牙齿是由我们一生中吃过的食物形成的，这些食物的同位素特征嵌入了我们的身体组织。我们可以利用活着的人类和动物的这些特征来确定他们吃的是什么食物，特别是他们牙齿或骨骼形成时生活在哪里。

There are records of the food we have eaten and the places we have been stored in our bones and teeth. These records are called isotope signatures. They are there because our bones and teeth have been formed from the foods we have eaten over our lifetimes and the isotope signatures from those foods have been embedded in our body tissues. We can use these signatures in living humans and animals to determine what the foods they ate were, and especially where they were living when their teeth or bones were formed.