[00:05.32]sustainable:a.支撑得住的,能承受的;能维持的,能保持的 [00:07.54]symbolic:a.象征的;符号的 [00:09.71]tackle:vt.对付,与交涉;阻截;n.阻截;用具;辘轳 [00:11.59]temporary:a.暂时的,临时的;...