When this happens, the umbra cannot reach Earth and an antumbra shadow is created over the planet's surface.

当这种情况发生的时候，本影无法到达地球，非本影阴影就会出现在地球表面。

youdao

It will end at 21:02 UT (10:02 p.m. GMT) when the shadow will once again be seen to slip slowly across the surface of the moon.

它会在21：02分(世界时上午10：02分)结束。这时我们能看到影子又会缓慢的从月球表面移开。

youdao

The qualities of a shadow depend on the light direction and intensity, as well as the distance between the object and the surface where the shadow is cast.

阴影深度取决于光照方向和强度，以及物体和投影面的距离。

youdao

With shadow puppets, the puppeteer stands behind a white cloth surface and rests the slightly see-through puppets against the cloth.

VOA: special.2009.09.23

The dark shadow grows as the shark is pulled to the surface.

FORBES: Summit Series: Catching Sharks With Celebrities And A Billionaire (video)

Shadow health secretary Tim Yeo said the plans would only "scratch the surface" of the problem.

BBC: NEWS | Health | 'Health tourism' rules unveiled