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Security & Safety

Locks, alarms, protective gear, cautionary phrases, and warnings.

Part 1

Part 2

Part 2

掩护
消防
警告
警惕
巡逻
防止
隐患

7 words to learn

Part 1

小心
危险
安全
危害
锁
预防
保卫
保管
当心
戒备

10 words to learn