Maybe you can see the Great Wall clearly from space with binoculars but not with the naked eye.

也许你可以用双筒望远镜从太空中清楚地看到长城，但用肉眼却看不见。

youdao

youdao

The distance the wall could be seen depends on the angular resolution of the imaging system (the eye) and the contrast of the wall vs. background.

能看清长城的最远距离取决于成像系统(眼睛)的角度分辨率以及长城与它周围环境的对比度。

youdao

You'll need to pay attention to his choice of restaurant, his manners and how much eye contact he makes--especially if there's a television set on the wall with a game on.

FORBES: Magazine Article

Dr. Friedman surveyed the room, clearly attempting to make eye contact with the closest suspect, though unfortunately that suspect was Janey Filch, wall-eyed and so shy she looked ready to faint.

NEWYORKER: Playdate

Kodak (nyse: EK - news - people ) Chief Executive Daniel Carp told The Wall Street Journal to keep on an eye on his new hire.

FORBES: Magazine Article