Physiological and biochemical effects of Hg ~ ( 2 + ) of Egeria najas were tested.研究了不同浓度Hg2+对细叶蜈蚣草(Egerianajas)叶绿素(Chl ) 、超氧化物歧化酶(SOD)和过氧氢酶(CAT) 的分子毒理学效应....
Each child had to recite a poem to the class.每个孩子都得在班上背诵一首诗。I do not doubt ( but ) that he can recite it.我相信他能把它背下来.He is going to recite a poem.他将要朗诵一首诗....