"Preparing for pregnancy" 或者 "planning for pregnancy" 都是用来表示备孕的常用英语短语。这两个短语都指的是在怀孕之前做好准备的过程，包括健康方面的准备、财务方面的准备等等。

一些例句：

We're planning for pregnancy and thinking about starting a family.
Preparing for pregnancy can be a complex process, especially when it comes to making sure you're healthy and ready for the challenges ahead.
It's important to start planning for pregnancy early, so you can make sure you're in the best possible position to have a healthy baby.

中文翻译：

我们正在考虑备孕，开始组建家庭。
备孕是一个复杂的过程，尤其是在确保自己健康并为即将到来的挑战做好准备方面。
考虑早日备孕非常重要，这样才能确保你有最好的条件来孕育健康的宝宝。