偏远: remote, far from civilization...
丰硕: plentiful, substantial, rich (in resources etc)...
作战: combat, to fight...
下乡: to go to the countryside...
万: ten thousand, a great number...
涵盖: to cover, to comprise, to include...
序言: preface, introductory remarks, preamble, prelude...
人体: human body...
泄气: to leak (gas), to be discouraged, to despair, (disparaging) pathetic, to vent one's anger, (of a tire) to be flat...
记号: mark, symbol, notation, seal...