Water r flea水蚤
Extermination of Water Flea水溞虫杀灭方法
toxic test of water flea水蚤毒性试验
culture method of water flea微尘子养殖法
N(名词) any of numerous minute freshwater branchiopod crustaceans of the order Cladocera, which swim by means of hairy branched antennae 水蚤 → see also daphnia