boundary
[UK]/'baʊn.dər.i/ [UK]/-dri/ [US]/-dɚ-/
noun [C]
A
* a real or imagined line that marks the edge or limit of something
分界线；边界

1. The Ural mountains mark the boundary between Europe and Asia.
乌拉尔山脉是欧洲和亚洲的分界线。

2. Residents are opposed to the prison being built within the city boundary.
居民们反对把监狱建在市区。

* the limit of a subject or principle
界限

1. Electronic publishing is blurring the boundaries between dictionaries and encyclopedias.
电子出版使得字典与百科全书的界限变模糊了。

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boundary ★★☆☆☆

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boundary
bound·ary / 5baundri / noun (pl. -ies)
1. a real or imagined line that marks the limits or edges of sth and separates it from other things or places; a dividing line
   边界；界限；分界线:
   national boundaries
   国界
   (BrE) county boundaries
   郡界
    boundary changes / disputes
   边界变化/争端
   The fence marks the boundary between my property and hers.
   那道篱笆是我和她的地之间的地界。
   Scientists continue to push back the boundaries of human knowledge.
   科学家不断扩大人类知识的范围。
   the boundary between acceptable and unacceptable behaviour
   允许的和不允许的行为之间的界限
⇨ note at border
2. (in cricket 板球) a hit of the ball that crosses the boundary of the playing area and scores extra points
   使球越过边界线的击球(得加分)

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boundary noun

1. line that marks the limits of a place

• ADJECTIVE common | northern, southern, etc. | national, state | territorial | district, parish (esp. BrE) | geographic (esp. AmE), geographical

• VERB + BOUNDARY have | form, mark The river forms the ~. | share | draw, establish, fix, set The ~ was fixed just south of the farm. | redraw

• BOUNDARY + NOUN fence, hedge (esp. BrE), line, wall | dispute a ~ dispute between Brazil and Paraguay

• PREPOSITION across the ~, over the ~ They drove across the ~. | along the ~ We continued along the southern ~ of the county. | at the ~, on the ~ We had to stop at the ~. | on the ~ of the two countries | beyond the ~ She had never strayed beyond the city boundaries. | within the ~s within the boundaries of the old city walls | ~ between the ~ between Sussex and Surrey | ~ with The state has a ~ with Ontario.

2. limit

• ADJECTIVE traditional

• VERB + BOUNDARY cross This job crosses the traditional ~ between social work and health care. | extend, push, push back research which extends the boundaries of human knowledge | overstep | establish | define | blur The Internet has blurred the ~ between news and entertainment.

• PREPOSITION across ~s His policies appeal across party political boundaries. | beyond the ~s This goes beyond the boundaries of what is accepted. | on the ~ on the ~ of physics and chemistry | within the ~s the importance of keeping within the boundaries of the law | ~ between the ~ between sanity and insanity

• PHRASES the boundaries of taste In her performance she had clearly overstepped the boundaries of good taste. | sb/sth knows no boundaries His passion for the arts knows no boundaries.

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boundary noun
⇨ border (a boundary wall) ⇨ limit 2 (the boundaries of knowledge)

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boundary

noun
1 the river Jordan marks the boundary between Israel and Jordan
BORDER , frontier, borderline, partition, dividing line, bounding line.
See AWKWARD SYNONYMS at border.

2 the boundary between art and advertising
DIVIDING LINE , divide, division, borderline, demarcation line, line of demarcation, cut-off point, threshold.

3 he walked the boundary of his estate
BOUNDS , confines, limits, outer limits, extremities, margins, edges, fringes; border, periphery, perimeter, circumference, rim, circuit; poetic/literary marge, bourn, skirt.

4 {boundaries} the pupils probed the boundaries of accepted behaviour
LIMITS , parameters, bounds, outer limits, confines, extremities, barriers, thresholds; ambit, compass.

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boundary

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boundary：界线，边界

词根词缀： bound束缚 + -ary地点

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