All by sun power
本文作者： 21ST
LOOK at the picture. Is this a spacecraft (宇宙飞船)? No, it’s a boat. It is 30 meters long. The boat always has a lot of energy (能量). The sun gives it to the boat. This means it can go very far. Scientists (科学家) say it will* travel around the world in 2010. |  |
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