单词	security clearance
释义	security clearanceseˈcurity ˌclearance noun [countable, uncountable] Examples EXAMPLES FROM THE CORPUS A visitor without security clearance must be signed for by the sponsor and accompanied at all times. Another son, Ron, is a Lockheed employee with a security clearance. In preparation for his job at Commerce, Huang received an interim security clearance while he was still working at Lippo. official permission for someone to see secret documents etc, or to enter a building, after a strict checking process
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