预习 新知早知道Unit 5 Into the unknowninvestigation millimetresubstance drilling vol(volume)subdue furthermore stack notable shrinks from set out are looking into check out think twice investigation throw yourself into substance steer clear of Furthermore notable investigation uncharted 大约有三百万艘沉船更详细的比我们地球自己的海床(地图)还要详细就像是直接从科幻小说中出来的相当于50架飞机层层叠加保持了载人潜艇最深潜水的纪录谢谢观看 THANK YOU!
