The documental material and social investigation methods were used to study the effect of 2008 Olympic sailing game on the mass sports of the host city-Qingdao.是什么意思_The documental material and social investigation methods were used to study the effect of 2008 Olympic sailing game on the mass sports of the host city-Qingdao.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句