barrier like obstacle 壁垒式障碍
As he describes what happens next, Piechowski looks away as though he can see the last obstacle before him. "We are driving towards the final barrier, but it is closed . . .
佩特罗夫斯基在讲述接下来发生的情形时,把目光投向远处,仿佛能看见横在他面前的最后一道障碍。
The blood-brain barrier - which stops most things in the blood stream from crossing to our brains - is much too great an obstacle.
血脑障壁更是重大障碍,它有着阻止血液中许多物质进入我们大脑的作用。
They can be a major problem for businesses expanding abroad, with the greatest obstacle of all being the language barrier.
他们能够成为对海外拓展业务的主要问题,语言阻碍成为了最大的阻碍。
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