Question

barrier 【BARRIER】The Sahara desert is a natural barrier that separates Northern and Central Africa.撒哈拉沙漠是分隔北非和中非的天然屏障。【重点词汇】barrier n. 障碍 同: hindrance

Accepted Answer

['bæriər] 
barriera structure or object that impedes free movement
Barriers are walls, either physical or metaphorical. They can block movement — the Great Wall of China was a barrier to block invading forces from entering. A window shade is a light barrier. Failing English is a barrier to getting into Harvard.
When people are being excluded from joining a clique, you could say that the clique has erected a social barrier. When fighter jets fly faster than the speed of sound, they break through what feels like a wall in the sky called the sound barrier. The Green Monster at Fenway Park keeps Boston Red Sox fans from being able to watch games from outside the stadium — it's a barrier to sight. But when line drives hit the Green Monster, bouncing the ball back into left field, the Green Monster acts also a barrier to easy home runs.
All forms of 'barrier' will appear on average once every 328 pages.barrier

Front	barrier
Pron	['bæriər]
Back	【BARRIER】 The Sahara desert is a natural barrier that separates Northern and Central Africa. 撒哈拉沙漠是分隔北非和中非的天然屏障。【重点词汇】 barrier n. 障碍同: hindrance
Vocab	barriera structure or object that impedes free movement Barriers are walls, either physical or metaphorical. They can block movement — the Great Wall of China was a barrier to block invading forces from entering. A window shade is a light barrier. Failing English is a barrier to getting into Harvard. When people are being excluded from joining a clique, you could say that the clique has erected a social barrier. When fighter jets fly faster than the speed of sound, they break through what feels like a wall in the sky called the sound barrier. The Green Monster at Fenway Park keeps Boston Red Sox fans from being able to watch games from outside the stadium — it's a barrier to sight. But when line drives hit the Green Monster, bouncing the ball back into left field, the Green Monster acts also a barrier to easy home runs. All forms of 'barrier' will appear on average once every 328 pages. barrier

Barrier Green Movement Block Wall Monster Bæriər Sahara