About day four, we realized that there was nothing in this chamber but hominids.

大约在第四天的时候，我们意识到，这间屋子里除了人科动物，什么都没有。

By the 1950s, the number of named hominid types had risen to comfortably over a hundred.

到20世纪50年代，被命名的人种动物名称已达100种以上。

One area of paleoanthropological study involves the eating and dietary habits of hominids, erect bipedal primates—including early humans.

古人类学研究的一个领域涉及原人（双脚直立行走的灵长类动物，包括早期人类）的饮食习惯。

In fact, in 2007, in the Siwa oasis, an early hominid footprint was discovered fossilized in the rocks.

事实上，2007年在锡瓦的岩石中，发现了一个早期原始人的足迹化石。

At no time since hominids first arose on Earth has Australia not been an island.

自从人科动物第一次在地球上出现以来，澳大利亚就一直是一块孤立的陆地。

I found my first hominid — one-in-ten-million chance — my first day. It was completely — I was hooked.

我发现了我的第一个人科动物化石——千万分之一的机会——我第一天就发现了。我完全被迷住了。

An upright hominid could see better, but could also be seen better.

直立行走的人科动物看得更清楚，但也被看得更清楚。

In addition, Homo erectus was the first hominid [HAH muh nid] to use fire.

此外，直立人是第一个使用火的原始人 [HAH muh nid]。

It has these very different hands than any kind of hominid we've ever seen before, with those long, curved fingers.

它的手和我们以前见过的任何一种人科动物的手都不一样，有着又长又弯曲的手指。

We know less about ourselves, curiously enough, than about almost any other line of hominids.

很有意思的是，我们对自己的了解，少于对人科动物几乎任何别的分支的了解。