积极进取,锐意进取One w□tness came for□ard, cl□□ming t□ have□seen a□mysterious man lur□ing□ne□r the group's□□amp□ite in the days leadi□g up t□□□heir□disappeara□ce.□The ind□v□d□al described □he ma□□as tall and impos□ng, a□d there were r□ports of h□ated □onf□o□tations between□him and □he mis□in□□grou□. Co□ld this□stra□ge□ ho□□ the ke□ to solv□ng □he myster□, □□ wa□ □e□just a red herring□i□ □he □ase?□□他人