When you're sucking up bits of dirt or crumbs around the house with a handheld cordless vacuum, you are actually using the same technology that astronauts used on the moon.
当你拿着手提式无线吸尘器，吸除房间里的灰尘和面包屑时，你使用的是与宇航员在月球上使用的相同的技术。
When you're sucking up bits of dirt or crumbs around the house with a handheld cordless vacuum, you are actually using the same technology that astronauts used on the moon.
当你拿着手提式无线吸尘器，吸除房间里的灰尘和面包屑时，你使用的是与宇航员在月球上使用的相同的技术。
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