Abortion advocates may be correct in their assertion that the practice is a necessary tool of population control ,but they seem to neglect the preciousness of human life in its earliest stages .

• 人工流产的提倡者认为它是控制人口的一种必要手段。他们也许是对的，但他们可能忽略了人的生命在最初阶段的宝贵。