But to keep safe we must follow some simple rules.
但是要保证安全，我们必须要遵守一些简单的规则。
Your safety is our responsibility. But to keep safe we must follow some simple rules.
大家的安全是我们的责任。但是要保证安全，我们必须要遵守一些简单的规则。
Your safety is our responsibility. But to keep safe we must follow some simple rules.
大家的安全是我们的责任。但是要保证安全，我们必须要遵守一些简单的规则。
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