Nanotyrannus teeth are more primitive in design.

矮暴龙的牙齿更加原始。

This ability may date back to even more primitive organisms than fish.

动物的识数才能甚至可以出现在比鱼还原始的生物中。

We had more primitive immune systems, and we used cellulose-based diets.

我们人类以前的免疫系统比较原始，我们的饮食则以纤维素为主。

Centers that in more primitive dinosaurs, we didn't really see enlarged.

在更原始的恐龙颅腔里，我们看不到它的伸展。

The ancient Romans used a more primitive routine method of whitening teeth.

古罗马人曾经用一种更加原始的日常增白牙齿的方法。

One of the things that tells us that it's actually a more primitive dinosaur.

这一点说明它是一种较为原始的恐龙。

Epithelioid cells are the more primitive cells, whose proliferation induces neoplasia.

上皮样肌细胞是较为原始的间叶细胞，增殖形成肿瘤。

In that sense, the human hand today actually may be the more primitive appendage, they said.

这样的话, 人类如今的手实际上可能是更古老的零件.

In that sense, the human hand today actually may be the more primitive appendage , they said.

这样的话，人类如今的手实际上可能是更古老的零件。

However, sometimes I miss the more primitive way of life previously, when more humane elements were in presence and more emotional contacts were felt.

但是，我也有点怀念以前那种比较原始的生活方式，那时有更多人性化的因素，能感受更多情感的交流。