胸膛: chest...
外婆: (coll.) mother's mother, maternal grandmother...
后背: the back (human anatomy), the back part of sth...
着迷: to be fascinated, to be captivated...
标本: specimen, sample, the root cause and symptoms of a disease...
遗失: to lose, lost...
没收: to confiscate, to seize...
肩负: to shoulder (a burden), to bear, to suffer (a disadvantage)...
遛: to stroll, to walk (an animal)...
简单: simple, not complicated...
