旧: new, former, worn (with age)...
豹: leopard, panther...
雪: snow, (literary) to wipe away (a humiliation etc)...
失事: (of a plane, ship etc) to have an accident (plane crash, shipwreck, vehicle collision etc), to mess things up...
会员: member...
相处: to be in contact (with sb), to associate, to interact, to get along (well, poorly)...
从: lax, yielding, unhurried, from, obey, observe, follow, second cousin...
石油: oil, petroleum...
发病: onset, outbreak (of a disease)...
后期: late stage, later period...