交界的英文：
common boundary
common border

参考例句：

When dorothy came out, she was given a coming-out party in particular
当罗西初入社会交界时，专门为她举行了一次拉关系的社交聚会。

Our territory marches with theirs.
我们的领土与他们的交界。

The U.S. is bounded on the north by Canada.
美国北面与加拿大交界。

The interfacial shear stress is a constant proportion of the bottom shear
交界面的剪力与底部剪力之比是常数。

It created no small stir in the diplomatic world.
这件事在外交界引起了不小的震动。

I'm a gunnery expert misplaced in diplomacy.
我是个学射击学的，被错误地安排在外交界。

I'm a gunnery expert misplaced in diplomacy
我是个学射击学的，被错误地安排在外交界。

Which impressed Liubola most is the tunnel locate between E'yu frontier and Qiyue mountain.
位于鄂渝交界的齐岳山隧道，给刘坡拉留下了深刻印象。

They are just the sort of people who have their uses when one is ringing out a girl
他们正是那种把少女介绍入社交界时能起作用的人。

When Dorothy came out, her mother had partied for her.
多萝西初入社交界时，专门为她举行了一次拉关系的社交聚会。

common是什么意思：
adj. 普通的；一般的；通常的；通俗的；公共的，共有的；共同的
n. 普通；平民；公共地

international common
国际公地

Commonness is happiness.
平凡是福。

A common danger causes common action
同仇敌忾

boundary是什么意思：
n. 边界；范围；分界线

Boundary is used with administrative areas smaller than a state or country boundary
用于指行政区域,范围比国家小

An exact artificial boundary condition is obtained on a spherical boundary by a constructive method.
同样，采用构造法在球面上获得了精确的无反射人工边界条件。

There are no indecisive boundaries between the two opinions.
这两种意见界线分明。

border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。