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Éú̬ÆÁÕÏThe sun's rays could not wedge their way through the barrage of foliage.
Ñô¹â͸²»¹ýÊ÷Ò¶µÄÆÁÕÏ¡£A ball that is hit into this meshwork barrier.
´¥ÍøÇòײÔÚÍø×´ÆÁÕÏÉϵÄÇòIt could then have served as a trusty shield.
Ëü¾Í¿ÉÒÔ³ÉΪһ¸ö¿É¿¿µÄÆÁÕÏ¡£The mountain rose up in a steep wall of rock.
Õâ×ùɽ¸ß¶ø¶¸£¬ÐγÉÒ»µÀÑÒʯÆÁÕÏ¡£The new dam was a bulwark against future floods.
ÐÂË®°ÓÊǽ«À´µÖÓùºéË®µÄÆÁÕÏ¡£The immune system is our main defence against disease.
ÈËÌåµÄÃâÒßϵͳÊǵÖÓù¼²²¡µÄÖ÷ÒªÆÁÕÏ¡£It could then have served as a trusty shield
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