学员: student, member of an institution of learning, officer cadet...
足够: enough, sufficient...
差别: difference, distinction, disparity...
不对: incorrect, wrong, amiss, abnormal, queer...
仙鹤: red-crowned crane (Grus japonensis)...
度: to pass, to spend (time), measure, limit, extent, degree of intensity, degree (angles, temperature etc), kilowatt-hour, classifier for events and occurrences...
精益求精: to perfect sth that is already outstanding (idiom); constantly improving...
救灾: to relieve disaster, to help disaster victims...
她们: they, them (for females)...
辆: classifier for vehicles...