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prob·lem /ˈprɑbləm, bṃ, ˌblɛm/

問題,難題(a.)成問題的,難處理的

From: Network Terminology

problem

問題

Prob·lem n.

1. A question proposed for solution; a matter stated for examination or proof; hence, a matter difficult of solution or settlement; a doubtful case; a question involving doubt.

2. Math. Anything which is required to be done; as, in geometry, to bisect a line, to draw a perpendicular; or, in algebra, to find an unknown quantity.

Note: ☞ __Problem__ differs from __theorem__ in this, that a problem is something to be done, as to bisect a triangle, to describe a circle, etc.; a theorem is something to be proved, as that all the angles of a triangle are equal to two right angles.

**Plane problem** Geom., a problem that can be solved by the use of the rule and compass.

**Solid problem** Geom., a problem requiring in its geometric solution the use of a conic section or higher curve.

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From: WordNet (r) 2.0

problem

n 1: a state of difficulty that needs to be resolved; "she and

her husband are having problems"; "it is always a job to

contact him"; "urban problems such as traffic congestion

and smog" [syn: job]

2: a source of difficulty; "one trouble after another delayed

the job"; "what's the problem?" [syn: trouble]

3: a question raised for consideration or solution; "our

homework consisted of ten problems to solve"