小溪: brook, streamlet...
列入: to include on a list...
适度: moderately, appropriate...
水果: fruit...
理所当然: as it should be by rights (idiom); proper and to be expected as a matter of course, inevitable and right...
唉: alas, oh dear...
俯首: to bend one's head...
一再: repeatedly...
与否: whether or not (at the end of a phrase)...
限于: to be limited to, to be confined to...
