This is beautiful! Chinese calligraphy. What do these characters mean?

好漂亮！是中国书法！这上面写的是什么意思？

What I eat won't stay down.

我吃东西时感到恶心。

How much time will it take for my mail to get to where it is going?

我的信件到达它要去的地方要用多少时间？

Do you have anything to declare for customs?

有什么要申报呀？

The price for one person for a ten-day tour is only $ 1088, which includes round-trip airfare.

十日游每人只要1088美元。这个费用包括来回机票。

Fine. The bill comes to $ 300 even.

好。账单上总共是300元整。