Some futurists envision nanotechnology also being used to explore the deep sea in small submarine, or even to launch finger-sized rockets packed with micro miniature instruments.
一些未来学家设想纳米技术也可以用于在小型潜水艇里探索深海，甚至可以用来发射装有微型仪器的手指大小的火箭。
Objects, like bits of old space rockets or satellites, move around the planet at very high speeds, so fast that even a very small piece can break important satellites or become dangerous to astronauts.
一些物体，比如一些旧的太空火箭或卫星碎片，在地球上以非常高的速度运动，速度如此之快，以至于一个非常小的碎片都能破坏重要的卫星或对宇航员造成危险。
Even "primitive" rockets such as those fired by Hamas against southern Israel would, if aimed at the Israeli heartland, put an end to normal life in the country.
尽管哈马斯发射的火箭堪称“原始”，但是如若目标指向以色列中心地带，将使国家社会的普通生活无以为继。
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