第一句：That's for my personal use.

那是我自己喝的。

A:I bought a bottle of XO at the duty-free shop, but that's for my personal use.

我在免税店买了一瓶XO，但那是自己喝的。

B:I see. Could you put the suitcase on the counter?

噢。你能把包放在柜台上吗?

第二句：Here is the prescription from my doctor.

这是医生开的处方。

A:What's this? It does not look like tonic.

这是什么?它看起来不像是保健品。

B:No. It's medicine for my stomach. Here is the prescription from doctor.

不。它是我的胃药。这是医生开的处方。

在表达自己的主观猜测时，可以说：I suppose that...;I guess that...;I assume that...;XO是白兰地的专用术语，表示“贮藏期”的意思。