The end of natural selection First of all, science and technology have changed nature's system of weeding out the weak. In treating infertility, designing procedures to ensure safe births, and caring for premature babies, great strides have been made.
首先，科技改變了原來大自然的淘汰機制，無論在不孕症治療、安胎技術、早產兒的照顧上，醫療科技都有長足的進步。