It, from which a debate on ethic and morality has sprung up for its relating to the actual use of human embryos, not only displays a bright future but brings about kinds of ethic puzzles to mankind.

• 它不仅向人类展现了更美好的希望曙光，也带来了诸多的伦理难题。由于这项研究涉及到对人类胚胎的应用，围绕研究所引发的伦理道德方面的争论近来日趋激烈。