boundary

教材释义与例句

名词

边界；范围；分界线

the real or imaginary line that marks the edge of a state, country etc, or the edge of an area of land that belongs to someone

National boundaries are becoming increasingly meaningless in the global economy.

在全球经济中，国界已经变得越来越没有意义。

We would need their agreement to build outside the city boundary .

我们在市界以外的地方建房需要他们批准。

The stream curves round to mark the boundary of his property.

小河打了个弯，为他这块地划出了边界。

Anything that crosses the boundary of a black hole cannot get back.

任何物质只要跨越黑洞的界线就再也无法出来。

We walked through the churchyard towards the boundary wall .

我们穿过教堂墓地，向院墙走去。

The property's boundary line is 25 feet from the back of the house.

这块地产的边界线在屋后25英尺的地方。

boundary disputes between neighbouring countries

邻国之间的边界争端

n. C1 Oxf 5000

1.

An edge or line marking an edge of the playing field.

体育游戏
2.

An event whereby the ball is struck and either touches or passes over a boundary (with or without bouncing), usually resulting in an award of 4 (four) or 6 (six) runs respectively for the batting team.

体育游戏

Travis hit a boundary to seal the match on the last ball of the over.
3.

Commission paid by a bus or jeepney driver to a public transportation operator for taking passengers, or the excess collected fares taken as daily wage.
4.

The dividing line or location between two areas.

边界
5.

The bounds, confines, or limits between immaterial things (such as one’s comfort zone, privacy, or professional sphere and the realm beyond).

比喻

I didn’t mean to push the boundaries by sending my boss a message on Saturday night.
6.

(of a set) The set of points in the closure of a set S, not belonging to the interior of that set.

边界

数学

名词

From bound + -ary, Old French, from Latin.

来源：wiktionary