界限的英文：
boundary
marginal
limit

a temporal dimension;temporal and spatial boundaries.
时间尺度;时间和空间的界限

The diseased bowel is, as a rule, sharply delimited.
病变肠道一般有很明显界限。

delineation of a boundary is limited to the visible features
界限的轮廓是受可见要素限制的。

The threshold of consciousness
识阈((意识作用发生与消失之界限))

extravagant gifts;often it implies unbridled divergence from the bounds of reason or sound judgment
奢侈的礼物);它经常指远离合理或公正的界限

to make sure that her characters didn't transgress the parameters of ordinariness(Ron Rosenbaum)
确保她的性格不越过正常的界限(罗恩·罗森鲍姆)

Borders between nations, between carriers, borders between products and between people and ideas are being dissolved.
国与国之间的疆界,运输公司之间的壁垒,产品之间的界限人员和思想之间的隔绝,都在消失之中。

quantitative limits of finance distribution
财政分配的数量界限

The limitation of authority is not distinct.
权力界限不分明。

Ambit/5AmbIt;`AmbIt/n [sing]bounds,scope or extent(of power,authority,etc)
(权势等的)范围,界限,限度.

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。

marginal initial
边缘原始细胞[见于植物]

We came to the margin of the wood.
我们来到树林的边缘。

margin release mechanism
极限释放机构

Life is limited, but there is no limit to learning.
生命是有限的，但学问是无限的。

He is a man of limited scope.
他是一个见地狭窄的人。

limit of maximum financial revenue
财政收入最大限量