downward /ˈdaunwəd/ adj. 往下的,向下的：a downward movement of the head 头部往下运动；the downward path to ruin 直至毁灭的下坡路


 downwards /ˈdaunwədz/ (AmE. 多作downward)  adv. 往下，朝下：He lay on the floor facing downwards. 他头朝下躺在地板上。