邻国的英文：
bordering country
neighbor country
neighboring countries
surrounding countries

参考例句：

Annex a neighbouring state
兼并邻国.

We interfered in their neighbourhood.
我们插手他们邻国的事务。

A country shall not aggrandize itself at the expense of its neighbors .
一个国家不应该牺牲邻国来壮大自己。

Levy war against a neighboring country.
对邻国发动战争。

They began to open commerce with neighboring countries.
他们开始与邻国通商。

Holland is one of Germany's neighbours.
荷兰是德国的邻国之一。

The country's subjection of its neighbour
该国对邻国的征服

Make/sign a `peace treaty with a neighbouring country
与邻国签订和平条约.

A sally into a neighboring country.
去邻国旅行.

Enter into/break off an alliance with a neighbouring state
与邻国结成[解除]联盟.

bordering是什么意思：
n. 边界，国界；镶边
v. 与…接壤；为…镶边

It has no border or caption.
它没有边框和标题。

There is a border of flowers round the lawn.
草坪的四周有狭长的花坛围绕。

There was a flower border beneath the wall.
墙脚处有一花坛。

country是什么意思：
n. 国家；乡村，田野；区域
adj. 乡下的，乡村风味的

The country was in ferment.
那个国家处于动乱中。

It is the trademark of the country.
它是该国的标志。

This is an agricultural country.
这是个以农业为主的国家。

neighbor是什么意思：
n. 邻居；邻国
adj. 邻近的

Danger is next neighbor to security
福兮祸所伏

A mountain and a river are good neighbors
一衣带水

This neighbor crewed on a ferryboat.
这位邻居在一艘渡船上当船员。