Chapter VI. How it is that Conceptions are Made.

Aristotle says, that conception takes place when the womb is drawn¹ down by the natural purgation, and the monthly terms attract from the whole mass part of the purest blood, and this is met by the seed of man. On the contrary, there is a failure by the impurity² and inflation of the womb, by fear and grief, by the weakness of women, or the decline of strength in men.

1 drawn   

v.拖，拉，拔出；adj.憔悴的，紧张的

参考例句：

• All the characters in the story are drawn from life.故事中的所有人物都取材于生活。
• Her gaze was drawn irresistibly to the scene outside.她的目光禁不住被外面的风景所吸引。

2 impurity   

n.不洁，不纯，杂质

参考例句：

• The oxygen reacts vigorously with the impurity in the iron.氧气与铁中的杂质发生剧烈的化学反应。
• The more general impurity acid corrosion faster.一般来说杂质越多酸蚀速度越快。