动词短语
中文翻译：保护
同义词：
['protect', 'guard against', 'defend against']
例句：
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1.We need to guard against the spread of the virus.
我们需要防止病毒的传播。
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2. The company is guarding against a cyber attack.
该公司正在防范网络攻击。
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3.The police are guarding against a break-in at the bank.
警方正在防范银行被闯入。