我不懂，这科学与未来是正经的research journal吗？

来源: prettyfunnyface 于 2013-11-01 12:47:47 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.