1. But there was a flaw in Ross´s experiment.
    但是罗斯的实验有一个缺陷。

2. But most of the physical differences between originals and copies are so minor that detection of them would require a sophisticated laboratory.
    然而，在母体和克隆体之间存在的身体差异大部分都很小，小得需要在设备精良的实验室里测定。

3. The detection of crime is not always easy.
    查明犯罪不总是一帆风顺的。

4. This immense chasm has been formed by an underground stream which has tunnelled a course through a flaw in the rocks.
    这个深邃的洞穴是由一条地下暗泉冲刷岩石中的缝隙并使之慢慢变大而形成的。

5. I can´t find a flaw in his argument.
    在他的论点中, 我找不到任何破绽。