They were eating mostly plant based food.

他们主要吃植物性食物。

While we walk or drive to get food, plants grow toward it.

我们走向或驶向食物，而植物是朝它们生长。

In the Rockies, rising temperatures are shortening winter hibernation and stifling the growth of valuable food plants.

在落基山脉升高的气温缩短了冬眠的时间，也阻碍了食料植物的生长。

Will future generations of humanity be left with only a few species of food plants, and zoos exhibiting cockroaches and rats?

将来人类留给未来子孙的东西是否只剩下几种食用植物和只有展示蟑螂及老鼠的动物园呢？

We could just be putting food plants everywhere.

我们可以到处种植食用植物。

Many farmers use chemical products known as pesticides to protect food plants from insects.

许多农民使用称为杀虫剂的化学产品来保护食用植物免受昆虫侵害。

But I would assert that a lot of the benefit comes from the protective effect of all that fiber in all those plant foods.

但是，我可以断言，全素饮食带来的诸多好处，其实都来自于那些植物中所含的纤维。

So, where people in the past were gnawing on very fibrous low calorie plant foods as well as raw and cooked meat, maybe having to chomp through skin, cartilage and sinew.

所以，当人们在咀嚼低卡路里、高韧性的素食，或者咀嚼生肉和熟肉时，可能会需要咀嚼皮、软骨和筋。

And even then the tomato doesn’t appear to have been very important as a food plant until the European came on the scene. They took it back to Europe with them around 1550.

即便如此，在欧洲人出现之前，西红柿作为一种食用植物似乎并不重要。他们在 1550 年左右将它带回了欧洲。