国外旅行的英文：
1.a foreign tour

参考例句：

He is travelling abroad.
他要到国外旅行。

It is worth while to take a trip abroad.
到国外旅行是值得的。

The possession of a passport is essential for foreign travel.
去国外旅行需持有护照.

I take a stay-at-home trip abroad by visiting the foreign quarters
我以参观外国居民区来作不出国的国外旅行。

Now that she's an air hostess,foreign travel has lost its glamour for her.
她当上了空中小姐,到国外旅行对她已失去吸引力.

foreign是什么意思：
adj. 外国的；不属于本身的；无关的；外交的；陌生的

In the UK, there are the Foreign Office and Foreign Secretary.
在英国，有外交部和外交大臣。

custom of foreign trade.
对外贸易惯例

The guidebook is for the accommodation of foreign tuorists.
这份指南是为了方便外国游客而准备的。

The foreign market was increasingly crucial.
国外市场越来越重要了。

Deception was foreign to his nature.
欺骗和他的本性格格不入。

tour是什么意思：
n. 巡回演出；旅行
v. 巡回演出；旅行

It was a sightseeing tour.
这是一次观光旅行。

I conduct tours.
我当旅游向导。

We toured the streets of Milan.
我们游览了米兰的街道。

There 's part-time position for tour leader or tour guide.
这里有一个非全日导游的职位。

The details of the tour are incorrect and the publicity has to be changed.
有关此次旅游的详细情况有误，宣传材料应做改变。