This is an exception to storing everything in a common pool.
这是将所有的内容保存到一个公共地方的例外情况。
For example, we do not connection pool and do not use a common command interface.
例如，我们不使用连接池，也不使用通用命令接口。
Employment, too, is a common economic challenge and countries could pool their experience.
就业也是一个共同的经济挑战，各国可以一起积累经验。
Stepping into a pool of water is common enough, but who could ever imagine; stopping into a pool of fish?
步入一池水是再平常不过的，但是谁能想象步入一池鱼呢？
Stepping into a pool of water is common enough, but who could ever imagine; stopping into a pool of fish?
步入一池水是再平常不过的，但是谁能想象步入一池鱼呢？
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