stonefliesCOCA¹¹⁰⁶⁹⁵BNC¹⁷³⁹⁹⁵⁺² 基本例句 石蝇原型stonefly的三单 At the end of that time, the team found higher populations of stoneflies, mayflies and caddis flies in the screened segments than in adjacent unscreened ones. 时间结束时，该研究小组发现在安置有滤网的河段中，石蝇，蜉蝣和毛翅蝇的数量远高于相邻的未安置滤网的河段。 yeeyan