Our first child was conceived in March and born in December.

我们第一个孩子是在三月怀胎，在十二月出生。

We must conceive a plan to encourage business.

我们必须想出一套鼓励商业的办法。

It is hard to conceive of what life was like during the days of the cavemen.

很难想像穴居时期人们的生活是什么样子。