Try to eat at least four slices of bread a day.每天尽量至少吃4片面包。Whatever its obscurities, the poem was clear on at least one count.这首诗再怎么晦涩,至少有一点是清楚的。The police say his death was an accident, officially at least.警方说他的死是个意外,起码...
文章探讨了壳聚糖改性粘土絮凝除藻的机理.The mechanism of flocculation and removal of Microcystis aeruginosa by chitosan - modified clays was studied.在加入AZ和EZ后 铜绿微囊藻的K0.5 ( DIC ) 值均无显著变化.K 0.5 ( DIC ) of M. aeruginosa did not change when AZ ...