Any medical test will sometimes fail to detect a condition when it is present and indicate that there is one when it is not. 这句话到底怎么理解,我个人理解是:任何的药剂实验有时都不能检测出药瓶所描述的作用(尽管药品上是这么说的,但有时候事实并非如此) 正确选项:a condition when it is present and indicate that it is present
正确原句: Any medical test will sometimes fail to detect a condition when it is present and indicate that it is present when it is not. 翻译:任何的医学检查有时会不能够检测到健康状况,当有健康状况的时候,并且错误的指出有健康状况,当没有健康状况的时候。
fail to detect (fail to) indicate fail 理解为不能怎样,或者错误的做了什么