The tooth design of Tyrannosaurus Rex is very distinctive and therefore leaves very distinctive marks on the bones.

雷克斯暴龙的牙齿设计非常独特，它会在骨头上留下非常特别的痕迹。

Certain features or distinctive marks don't line up in photos the same way they do in the mirror, and that can throw us off.

某些特征或独特的标记在照片中并不像在镜子中那样排列，这会让我们大吃一惊。

Those grooves and ridges on our fingertips not only improve our touch perception and ability to grip things, but also provide us with a completely distinctive identification mark.

我们指尖上的那些凹槽和脊线，不仅提高了我们的触觉感知和抓握东西的能力，还为我们提供了一个完全与众不同的识别标记。

And we know this because, in most of the big bone-crushers, their cheek teeth show distinctive marks -- the same marks that modern hyenas get by gnawing on bones.

我们之所以知道这一点， 是因为在大多数大型碎骨机中，它们的颊齿上都有明显的痕迹——与现代鬣狗啃骨头时留下的痕迹相同。

Although the rugged outline of mountain, to which they were steering, presented no distinctive marks to the eyes of Duncan, the Mohican entered the little haven he had selected with the confidence and accuracy of an experienced pilot.

尽管他们驾驶的山峰轮廓崎岖不平，在邓肯眼中并没有明显的标记，但莫希干人还是以一位经验丰富的飞行员的信心和准确度进入了他选择的小避风港。

Evidence for ancient glaciations in the form of distinctive scrape marks left by glaciers were found in South America, Africa, India, and Australia, all regions near the equator with current climates far too warm to sustain a glacier.

在南美洲、非洲、印度和澳大利亚发现了古代冰川形成的证据，这些证据以冰川留下的独特刮痕的形式出现，这些地区都位于赤道附近，但目前的气候太温暖，无法维持冰川的存在。