单词	蹺蹺板
释义	蹺蹺板1. seesaw2. teeterboard3. teetertotter
随便看	active communicator active complex active component active component-- active ingredient active component; active ingredient active-component [= energy component active-component [= energy component; power component] active component of current active computer active conductor active constituent active constraint active content active context handle active continental margin active contract active control active control equivalence studies active control equivalence studies (aces) active control technology active control technology (act) active control trial active cooling active cooling surface active cooling--surface