分界的英文：
dividing line

参考例句：

recycled rubber median strip
再生橡胶高级公路中间分界之安全岛

"Something, such as a boundary or partition, that serves to divide or keep separate."
"分界物或分割物,用作分配或分类."

The two nations had a conflict because of the boundary of a river.
因为一条河流的分界，两国发生了冲突。

This includes all the delimiters, reserved words and keywords
这包括所有的分界符，保留字以及关键字。

In this ill-defined vastness sovereignty in the contemporary sense is a new phenomenon
在这个分界甚不明确的广大地带，现代意义上的主权概念还是一个新东西。

Having sharp divisions between light and dark patches; not smooth. Used of photographs and film.
粒面的在明暗区间有显著分界的;不平滑的。用于相片和电影胶片

dividing是什么意思：
adj. 区分的，分划的

Dichotomous:Divided or dividing into two parts or classifications.
两分的:被划分或划分成两部分或类群的.

Four divides eight.
4能除尽8。

We divided up the money.
我们把钱分了。

Make sure you are not dividing by zero.
确保不会除零。

The cells begin to divide rapidly.
细胞开始迅速分裂。

line是什么意思：
n. 线条，界线，路线；条纹；排；铁路线；生产线；台词；态度；防线；前线
v. 用线标出，划线于；使布满纹络；加衬里于；排队，排列成行

This is a lined trunk.
这是一个有衬里的箱子。

They are politically in line.
他们在政治上意见一致。

On a map there are horizontal lines and vertical lines.
在地图上有水平的线和垂直的线。

To inscribe(a line or lines)with a pencil or other marking implement.
画用铅笔或其它做标记的器具刻线

The new proposal is in line with our general line.
新建议和我们总的原则是一致的。