动词短语
中文翻译：保护免受
同义词：
['protect against', 'guard against例句：1. The soldiers were guarding the border with their lives.（士兵们用生命保卫边境。）']
例句：
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1. The soldiers were guarding the border with their lives.
士兵们用生命保卫边境。
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2.He was guarded by a group of armed guards.
他被一群武装警卫严密看守。
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3.The city was guarded by a wall and a moat.
这座城市被一道城墙和护城河所守卫。