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department of homeland security
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a US federal agency responsible for protecting the country from various threats, including terrorism, border security, immigration, and cybersecurity
例子
The Department of Homeland Security collaborates with other federal, state, and local agencies to enhance national resilience against terrorism and other threats.
The Department of Homeland Security oversees efforts to secure borders and prevent illegal immigration into the United States.
The Department of Homeland Security conducts investigations into cyber threats and works to strengthen national cybersecurity infrastructure.
