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Multiple safeties such as the hydraulic relief valve, etc...
液压安全阀等多重保险装置。
youdao
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Water safety is an important component of the safeties in the city.
水安全问题是城市安全问题的重要组成部分。
youdao
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Water safety is an important component of the safeties in the city.
水安全问题是城市安全问题的重要组成部分。
youdao