单例模式是一种非常有用的设计模式，它允许你的类对外只提供一个实例，但是常犯的错误在于不止一个实例被创建。
The singleton is a useful design pattern for allowing only one instance of your class, but common mistakes can inadvertently allow more than one instance to be created.
相对于只提供单个数字，你将会希望列出一个自动嵌入相应的风险调整的概率分布情况。
Rather than arrive at a single number, you'll want to come up with a probability distribution that automatically builds in the appropriate risk adjustments.
有更多的空间，你可以看到完整的网页标题——火狐只提供了一个简单的记录，但Chrome提供了浏览选项。
There's more space and you can see the full page title - Firefox offers a simple record but Chrome offers browsing options.
一般来说，保险公司只提供一个一般验放责任保险政策；有的可以通过提供额外的复盖范围，你可以购买。
In general, insurance companies only offer one general watercraft liability coverage policy; some others may offer additional coverage that you are able to purchase.
一般来说，保险公司只提供一个一般验放责任保险政策；有的可以通过提供额外的复盖范围，你可以购买。
In general, insurance companies only offer one general watercraft liability coverage policy; some others may offer additional coverage that you are able to purchase.
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