ecological security defense

• 生态安全屏障

ecological security defense的用法和样例：

例句

1. Palestinians bitterly complain about Israel's security barrier, or wall, surrounding Bethlehem, which was built in response to a wave of suicide bombings a few years ago.
   巴勒斯坦人愤怒地抱怨以色列在伯利恒周围建立的安全屏障，这个围墙是几年前为了应对自杀性爆炸袭击的猛增而修建的。