既然我们要用mongodb来实现，还要用框架来做，那么首先我们得知道用原始的语句怎么写，如下： Taking a case analyze, examine how environmental communication grounded within the Strategies and methods of acoustic ecology can provide environmental challenges to public awareness in ways in which other types of interaction (e. Algebra，actuarial science，calculus，differential equations，discre... https://essayv.net/group-project%e5%86%99%e4%bd%9c/