1.  security
2.  safety

• 1. 安全性: Security | safety | Secure
• 2. 内部安全性: internal security
• 3. 外部安全性: External security

更多释义

• 1.它没有达到安全性和适航性的规定标准。
  It didn't reach required standards of safety and seaworthiness.
  dict.yoduao.com
• 2.比起速度，汽车买主更关注安全性和可靠性。
  Car buyers are more interested in safety and reliability than speed.
  dict.yoduao.com
• 3.这比用现金支付安全性低得多。
  It was much less secure than paying with cash.
  dict.yoduao.com

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