日本一名官员表示，一名日本太空人计画在太空站里丢掷回力标，想要测试它在无重力状态下如何飞行。
A Japanese astronaut plans to throw a boomerang inside a space station. He wants to test how it can fly in zero gravity, an official said.
日本一名官员表示，一名日本太空人计画在太空站里丢掷回力标，想要测试它在无重力状态下如何飞行。
A Japanese astronaut plans to throw a boomerang inside a space station. He wants to test how it can fly in zero gravity, an official said.
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