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汉语拼音：píng zhàng

1.像屏风那样遮挡着的东西（多指山岭、岛屿等）：燕山山地和西山山地是北京天然的～。

2.遮挡着：～中原。

1. 亦作“ 屏鄣 ”。屏风。

   《晋书·阮籍传》：“ 籍 乘驴到郡，坏府舍屏鄣，使内外相望，法令清简。” 唐 杜甫 《韦讽录事宅观曹将军画马图歌》：“贵戚权门得笔跡，始觉屏障生光辉。” 元 白朴 《墙头马上》第一折：“小姐，佳人才子为甚都上屏障，非同容易也呵！” 明 刘基 《发普济过明觉寺至深居记》：“诸峯咸外列如屏障，故寺高不露。”参见“ 屏风 ”。

2. 泛指遮蔽、阻挡之物。

   唐 李山甫 《山中依韵答刘书记见赠》：“野寺连屏障，左右相裴回。”《明史·王复传》：“险隘俱在内地，而境外乃无屏障，止凭墩堡以守。” 艾青 《在浪尖上》诗：“他是一架大山－－敌人难于逾越的屏障。”

3. 保护，遮蔽。

   明 朱有燉 《风月牡丹仙》第三折：“从今俺皆尊让牡丹仙，愿情在他四围屏障奉侍他也。” 杨朔 《洗兵马》卷上一：“山头上长满赤松、杉松、落叶松，莽莽苍苍的，是屏障 南朝鲜 的一道险要门户。”

• The immune system is our main defence against disease.

  人体的免疫系统是抵御疾病的主要屏障。

• These man-made barriers will ensure a very high degree of protection.

  这些人造屏障将会确保提供高度的保护。

• The Yanshan Hills provide a natural defence for Beijing.

  燕山是北京的天然屏障.

• What was the barrier to freedom that had been erected out here?

  在这里树起的拒自由于外的屏障是什么?

• The high wall was built as a defence against intruders.

  修建这堵高墙作为屏障以防外人闯入.

• I leaned forward, straining to see through the barrier of light.

  我向前探着身子, 透过灯光的屏障极目张望.

• The new dam was a bulwark against future floods.

  新水坝是将来抵御洪水的屏障.

• They kept their dignity by retreating behind an unreasoning authoritarian.

  他们以无理的权威气派为屏障,可以保持自己的威严.

• Healthy, skin, mucous membranes, and cilia are natural barriers to many viruses.

  健康的皮肤, 粘膜和纤毛是许多病毒的天然屏障.

• If the drug and IV solution are incompatible, use two glucose barriers.

  如果药物与静脉所输的液体是配伍禁忌的, 就要用两次葡萄糖屏障液.

• The Sahara Desert is a natural barrier between North and Central Africa.

  撒哈拉沙漠是北非与中非之间的天然屏障.

• The cell surface barrier had been broached.

  细胞表面屏障被凿开.

• A plastic membrane serves as selective diffusion barrier.

  一层塑料薄膜起着选择性渗透屏障的作用.

• " From many of the nobles, requesting that his art Lend a new lustre to their screens. "

  贵戚权门得 笔迹,始觉屏障生光辉.

• The functions of the secretory barrier of the tracheobronchial tree are physical, chemical, immunological, and biological.

  气管支气管树分泌屏障的功能有物理的 、 化学的 、 免疫学的和生物学的.