THIS footprint is part of one of two series of fossil tracks found recently in Kenya in rocks that are 1.5m years old.

这个脚印来自两组化石脚印中的其中一组，最近在肯尼亚一些有150万年历史的石头上被发现。

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There is no residual smudge, old wax, footprint or scratch.

没有参与污迹、旧蜡、脚印和刮痕。

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Only the old road surface that have long solidified and on those place that have been passed by countless steps, you cannot tread out your footprint.

那些凝固很久的老路面，那些被无数脚步走过的地方，你别想再踩出脚印。

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For example, we've got a robo-nose that can sniff out nasties in the air, a 110-million-year-old footprint found in NASA's back yard, and not one, but two space stories to reflect on.

ENGADGET: Alt-week 8.25.12: robotic noses, Nodosaurs and Space X launches again

There is strong evidence to suggest the potential is there as new local media replaces the old and becomes easily accessible to advertisers looking for a tight geographic footprint.

FORBES: Online Advertising, Coming Soon To A Neighborhood Near You

But the gang-rape in 1995 of a 12-year-old girl by three US service personnel led to moves to reduce the US military footprint there, amid island-wide outrage.

BBC: US sailors admit Okinawa rape