barrier
n. 障碍，壁垒；障碍物，关卡；分界线，屏障；大关，界限
【名】 （Barrier）（法）巴里耶（人名）
复数 barriers
例句
I realized I had to surmount the language barrier.
我认识到我必须得克服语言障碍。
《柯林斯英汉双解大词典》
The Yangtze river is a natural barrier to the north-east.
长江是东北方向的一道天然屏障。
《牛津词典》
Ozone is the earth's barrier against ultra-violet radiation.
臭氧是地球防止紫外线辐射的屏障。
