And these technologies were very promising, but the problem was that they were either inefficient, or they were difficult enough to use that most scientists had not adopted them for use in their own laboratories, or certainly for many clinical applications.
这些技术前程无量， 但问题是它们要么效率不高， 要么操作太复杂， 所以大部分科学家们并不在 实验室采用这项技术， 或是应用于临床。