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

约在的时候，我们意识到，这间屋子里除了人科动物，什么都没有。

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。

The Asian hominids would have had to appear, as it were, spontaneously.

可以说，除非亚洲的人科动物是自发出现的。

For a time, it appears, Homo erectus was the only hominid species on Earth.

在一段时期内，直立人似乎是地球上惟一的人属。

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

古人类研究的一领域涉及原人（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，发现了一早期原始人的足迹化石。

We evolved smooth long foreheads and agile eyebrows compared to a stiff brow ridge of archaic hominids.

与古人类僵硬的眉脊相比，我们进化出了光滑的长前额和灵活的眉毛。

To other hominids, Homo erectus must have seemed terrifyingly powerful, fleet, and gifted.

在其他人科动物的眼里，直立人肯定显得、有力气、敏捷和有才干。

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。

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。

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。

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

自从人科动物一次在地球上出现以来，澳利亚就一直是一块孤立的陆地。

But there is also an uncomfortable overlap with the rise of a certain hominid species originating in Africa 150,000 years ago.

另一双重效应就是15万年前某些原于非洲的原始人种的进化。

The spacecraft gets her name from the Lucy fossil, an ancient human ancestor whose remains transform the study of hominid evolution.

“露西”号得名于“露西”化石，是古人类祖先的化石，其遗骸推进了对人类进化的研究。

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

我发现了我的一人科动物化石——千万分之一的机会——我一就发现了。我完全被迷住了。

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

此外，直立人是一使用火的原始人 [HAH muh nid]。

But, as early hominids expanded their group size, reciprocal grooming became too time-consuming.

但是，随着早期原始人扩他们的群体规模，互惠梳理变得太耗时了。

Hominid brains expanded quite rapidly throughout human evolutionary history.

人类进化史上，人族脑的体积迅速扩。

But I started speaking to the hominid specialists.

但我开始与人类家专家交流。

But it's now thought that this was a different kind of hominid.

但现在认为这是一种不同的原始人类。