海外博客
研究證明人類普遍是天性樂觀的
Study indicates people by nature are universally optimistic
登錄後才可評論.
WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.
Copyright ©1998-2025 wenxuecity.com All rights reserved. Privacy Statement & Terms of Use & User Privacy Protection Policy
