Green infrastructure incorporates natural systems that can help supply clean water, reduce polluted runoff, reduce sewer overflows, minimize flooding and enhance community health and safety.
建设环保设施系统，可以帮助供应清洁用水，减少污水的外溢，减少洪水和加强社区健康和安全。
2
Scientists have discovered a drug that helps numb the pain of bad memories by flooding the mind with feelings of security and safety.
如今科学家已经发现了一种可以让大脑充斥安全感、“麻痹”痛苦记忆的药物。
3
Scientists have discovered a drug that helps numb the pain of bad memories by flooding the mind with feelings of securityand safety.