这些试验的有效性已显得令人怀疑.The tests have been shown to be of dubious validity.他们正在检测这种草药作为杀菌剂的有效性.They're doing tests to evaluate the effectiveness of this herb as an antiseptic.蛋白质还可以作为检测实验治疗有效性的标识物.They can serve as markers...
周四，南极气流给智利南部带来了刺骨的严寒。Antarctic air brought biting cold to southern Chile on Thursday.他是智利政坛的风云人物。He's a big shot in Chilean politics.智利和阿根廷对于南极的领土主张都持强硬态度。Both Chile and Argentina feel very strongly about their terr...