More than 600 million birds die every year from striking window surfaces.

每年有超过6亿只鸟因撞击窗户而死亡。

NASA's inside robotic lander has captured the vibrations and sounds of four meteorites striking the surface of the planet Mars.

美国宇航局的内部机器人着陆器捕捉到了四颗陨石撞击火星表面的振动和声音。

A robotic lander belonging to the US space agency NASA has captured the vibrations and sounds of four meteoroids striking the surface of the planet Mars.

美国国家航空航天局的一个着陆器探测到了四个流星体撞击火星表面的振动和声音。

Space scientists have long identified these lava caves as a likely site for human habitation on the Moon, because the thick walls and ceiling offer protection from the harsh radiation striking the Moon's surface.

太空科学家长期以来一直将这些熔岩洞穴确定为人类在月球上居住的可能地点，因为厚厚的墙壁和天花板可以保护免受撞击月球表面的强烈辐射。

Your elbows are also wonderful striking surfaces, and often much preferred to strike with over a closed fist- specially since most people, even professional boxers, simply don't know how to punch properly without breaking a finger or two.

你的肘部也是极好的击打表面，通常更喜欢用紧握的拳头击打——特别是因为大多数人， 甚至是职业拳击手， 根本不知道如何在不折断一两根手指的情况下正确出拳。