Question

insuperable 【insuperable】adj.不能超越的；不能克服的The deep river was an insuperable barrier to those who could not swim.对不会游泳的人来说，这条深河是无法超越的障碍。

Accepted Answer

[ɪn'suːpərəbl] 
insuperableincapable of being surmounted or excelled
Perhaps if you are a superhero, you can tackle an insuperable problem — one that is considered impossible to overcome.
Insuperable is an adjective that is often paired with nouns like difficulty, obstacle, and barrier. An insuperable difficulty is not just difficult; it’s impossible.  And an insuperable obstacle is not like a hurdle on a running track that slows you down a little; it stops you entirely. The opposite of insuperable is, of course, superable, though it’s less commonly used than its negative counterpart.
All forms of 'insuperable' will appear on average once every 3695 pages.insuperablyinsuperablesuperable

Front	insuperable
Pron	[ɪn'suːpərəbl]
Back	【insuperable】 adj.不能超越的；不能克服的 The deep river was an insuperable barrier to those who could not swim. 对不会游泳的人来说，这条深河是无法超越的障碍。
Vocab	insuperableincapable of being surmounted or excelled Perhaps if you are a superhero, you can tackle an insuperable problem — one that is considered impossible to overcome. Insuperable is an adjective that is often paired with nouns like difficulty, obstacle, and barrier. An insuperable difficulty is not just difficult; it’s impossible. And an insuperable obstacle is not like a hurdle on a running track that slows you down a little; it stops you entirely. The opposite of insuperable is, of course, superable, though it’s less commonly used than its negative counterpart. All forms of 'insuperable' will appear on average once every 3695 pages. insuperably insuperable superable

Insuperable Barrier Difficulty Obstacle It’s ɪn'suːpərəbl Adj.不能超越的；不能克服的 Deep