两栖: amphibious, dual-talented, able to work in two different lines...
近视: shortsighted, nearsighted, myopia...
含义: meaning (implicit in a phrase), implied meaning, hidden meaning, hint, connotation...
礼尚往来: proper behavior is based on reciprocity (idiom), to return politeness for politeness...
目中无人: to consider everyone else beneath one (idiom); so arrogant that no-one else matters, condescending, to go about with one's nose in the air...
峡谷: canyon, gill, ravine...
输血: to transfuse blood, to give aid and support...