endeavor做名詞時(shí)意為：努力；嘗試；任務(wù).可數(shù)名詞
單一的.努力用單數(shù)
1.Hard endeavor of 15 years is about to turn China's entry to the WTO into a reality .
經(jīng)過(guò)15年的艱辛努力,中國(guó)加入世貿(mào)組織即將成為現(xiàn)實(shí).
多種、多項(xiàng)努力用復(fù)數(shù)
Most of my endeavors are in collaboration with my wife, Jane Gray Morrison, and with colleagues and teams of researchers in dozens of countries.