The enamel contains chemical signatures of a local soil, passed by the plants the mastodons ate.

通过他们所吃的食物，牙齿上的釉质带有一些当地土壤的化学成分。

And, whether you like it or not, all of this stuff in your local soil and rock ends up in your diet.

而且，无论你喜欢与否，当地土壤和岩石中的所有这些东西最终都会出现在你的饮食中。

Unlike their counterparts in the United States, French farmers rarely use irrigation methods, and instead rely on " crops that are historically successful and adapted to the local soil, " says Mr. Lefort.

勒福特说，与美国的农民不同，法国农民很少使用灌溉方法，而是依赖“历史上成功的、适应当地土壤的作物”。