必须对这些鸟称重，辨识雌雄并挂上标牌。The birds must be weighed, sexed and tagged.你怎样辨别一条鱼的雌雄？How can you tell what sex a fish is?鸟的雌雄通常可就其颜色予以区分.Coloring differentiates the sexes in many birds....
Hydroxychloroquine is a recognized therapy for patients with pSS.羟氯喹被公认用于干燥综合征患者.Previous evidence from animal studies suggests that hydroxychloroquine has an antidiabetic effect.以前的动物研究表明,羟基氯喹具有抗糖尿病作用.The effect of hydr...
它们对被它们催化的反应有很强的专一性.They are highly specific for the reactions that they catalyze.这个脱羧作用是由谷氨酸脱羧酶催化的.This decarboxylation is catalysed by the enzyme glutamic acid decarboxylase.这个复合反应是被邻氨基苯甲酸合成酶催化的.This complex reaction is...