• 系统安全xì tǒng ān quán system safety; system security
• 安全ān quán anchor-hold, safety, security, sureness
• 安全保护装置ān quán bǎo hù zhuāng zhì safety guard; safety protection device
• 安全别针ān quán bié zhēn safety pin
• 安全玻璃ān quán bō lí safety glass
• 安全措施ān quán cuò shī safety precautions
• 安全带ān quán dài life belt, safety belt
• 安全岛ān quán dǎo safety island
• 安全灯ān quán dēng safe-light; safelight; safety lamp
• 安全地带ān quán dì dài refuge, safety zone
• 安全阀ān quán fá safety valve; relief valve
• 安全火柴ān quán huǒ chái safety match
• 安全技术ān quán jì shù safety engineering; safe practice
• 安全脚踏车ān quán jiǎo tà chē safety bicycle
• 安全界ān quán jiè safety limit
• 安全开关ān quán kāi guān safety switch; safety cut-off
• 安全帽ān quán mào motorcycle safety helmet; helmet; safety helmet; crash helment
• 安全认证ān quán rèn zhèng security certificate; safety certificate
• 安全设备ān quán shè bèi safety
• 安全剃刀ān quán tì dāo safety razor
• 安全系数ān quán xì shù safety factor
• 安全信管ān quán xìn guǎn safety fuse
• 安全眼罩ān quán yǎn zhào safety goggle
• 安全装置ān quán zhuāng zhì safety device; foolproofness
• 安危ān wēi safety, safety and danger

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hardball, hardbitten, hard-bitten, hardboard, hard-board, hard-boil, hard-boild, hard-boiled, hardboot, hardbound,

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3G, 401(K), a,

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harddrawn, hard-drawn, hard-earned, hardeesy, hard-electron, harden, harden into, hardenability, hardenable, hardened,

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3G, 401(K), a,

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hard-favored, hard-favoured, hardfern, hardfisted, hardgoods, hard-grained, Hardgrass, hardground, hardhack, hardhanded,

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3G, 401(K), a,