重点词汇
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保守
conservative; cautious; traditional; old-fashioned; insular; stuffy; prudent; conserve; preserve; maintain; keep; hold on to; conservation; conservatism
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国家机密
state secret
guard state secrets
保守
conservative; cautious; traditional; old-fashioned; insular; stuffy; prudent; conserve; preserve; maintain; keep; hold on to; conservation; conservatism
国家机密
state secret