The actue toxic effect of heavy metal Cu ~ ( 2 + ) to Stentor Polymorphrus ( Ciliophora, Heterotrichida ) was studied. 研究了重金属铜对异毛目纤毛虫多态喇叭虫 ( Stentor polymorphrus ) 的急性毒性影响.
市场行情在不断变化.The market is in a constant state of flux.市场行情有上涨趋势.There was a bullish trend in the market.股票市场行情急转直下.The stock market turned down sharply....