我们所经历的是一个前所未有的危机；如果我们不从中吸取教训以防范它再度发生，就没有对这个世界尽到责任。
What we are going through is an unprecedented crisis; and we will be failing the world if we do not draw lessons from the crisis to prevent its recurrence. It is on these lessons that I want to focus.
不过，如果集群中发生多个故障转移，RS节点可以防止您的数据库变得完全不可用。
Should multiple failures in a cluster occur, however, an RS node can prevent your database from being entirely unavailable.
如果托管服务公司达不到预期的要求，就需要找到原因并与托管服务公司交涉以防再次发生这类毁灭性的事故。
If a hosting company is not living up to expectations, it's crucial to find the causes and work with the hosting company before another crushing incident occurs.
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