过境的英文：
transit
pass through a country's territory

参考例句：

I am just passing through.
我只是过境而已。

Transit visa( visa allowing a person to pass through a country but not to stay there)
过境签证(允许过境而不许停留).

We'll be coming up to the border crossing soon.
我们快到到达过境处。

Many used Singapore as a transit centre and relocated themselves subsequently to other places in Southeast Asia.
不少人以新加坡作为过境站，从这里迁徙到东南亚其他地方。

transit是什么意思：
n. 通过，经过；运输；交通运输系统
v. 通过，经过；运送
adj. 中转的；过境的；临时的

But this is a transitional period.
但这是个转变过程。

You have to make the transition.
你不得不进行这个转变。

transitional economy
转变中的经济体系

pass是什么意思：
v. 通过；传递；及格；经过
n. 穿过，经过；通行证，护照，入场证

This coin will not pass.
这钱币不通用。

pass a messenger
传递引绳

The evening passed as evenings mostly pass at Italian theatres
那一声过得很平淡，象意大利戏院里的大多数夜晚一样

through是什么意思：
prep. 通过，穿过，凭借，由于，从始至终，遍及，完成、耗尽，不顾，贯穿
adv. 直达，从头至尾，电话接通
adj. 直达的，完成的、结束的，电话接通的

Have you got through?
电话接通了吗？

To foretell through or as if through the art of divination.
占卜，预言通过或似通过占卜术预言

Lasting or active through the year or through many years.
常绿的全年或多年都充满生机