Among her friends, casual dress and a relaxed manner are the rule.她的朋友一般都衣着休闲，举止也轻松随意。Although exceptions could be made, the rule still stands.虽然可能有例外，但该规定仍然有效。You must obey the rule. It is useless for you to kick agains...
The titer of antiserum was detected by immunoelectrophoresis and double immunodiffusion.利用免疫电泳、向琼脂扩散试验分析和测定抗血清的效价.Detect the tetanus antiserum units of immunized animals by indirect hemagglutination assay.用间接血凝实验检测免疫动物血清...