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cocooning | |||
protective device | |||
precaution | |||
preventive measure | |||
protective measures | |||
protective measure | |||
security | |||
safeguard procedure | |||
measures of protection; safety measures | |||
prevention measures | |||
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protective measure | |||
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preventive measure | |||
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protective measure | |||
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protective measure | |||
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preventive measure | |||
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protective measures |
防 护措施 : 35 phrases, 20 sujets |