Biology and mathematics.

生物学和数学。

But I think you two can have a good time together without me.

但我觉得， 我不去你们也会玩得很开心。

This is a little difficult for her.

这对她来说有点不习惯。

I see. Well, the idea of buying a house is exciting.

我明白了。嗯 买房子的念头叫人兴奋过头。

Good-bye.

再见。

I'm always prepared to listen.

我总是准备听的。