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如果所有的行星都被证实是毫无害处的风车时,那就是白花力气了。
If all such asteroids turn out to be harmless windmills, it will have been a wasted effort.
youdao
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如果所有的行星都被证实是毫无害处的风车时,那就是白花力气了。
If all such asteroids turn out to be harmless windmills, it will have been a wasted effort.
youdao