授权: to authorize...
阴暗: dim, dark, overcast, darkness, shadow, dismal, gloomy, somber, murky, shadowy (side)...
熊猫: panda...
完备: faultless, complete, perfect, to leave nothing to be desired...
气味: odor, scent...
关节: joint (physiology), key point, critical phase...
野兽: beast, wild animal...
追溯: to go upstream, to trace sth back to, to date from...
铁路: railroad, railway...
朝夕相处: be together morning and night, be closely associated...
