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security | |||
cocooning | |||
protective device | |||
preventive measure | |||
prevention measures | |||
precaution | |||
protective measure | |||
safeguard procedure | |||
protective measures | |||
measures of protection; safety measures | |||
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protective measure | |||
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protective measure | |||
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preventive measure | |||
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protective measures | |||
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protective measure | |||
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preventive measure |
防 护 措施 : 35 phrases in 20 subjects |