But then results from trials in Africa and Peru proved inconsistent and disappointing.
But then results from trials in Africa and Peru proved inconsistent and disappointing.
然而，在非洲及秘鲁进行的试验，结果却不一致且令人失望。
But then results from trials in Africa and Peru proved inconsistent and disappointing.
然而，在非洲及秘鲁进行的试验，结果却不一致且令人失望。