如果某个错误不在下一个封闭范围中处理，而是在其他封闭范围中处理，则此操作很有用。

This can be useful in scenarios where a certain fault is handled not on the next enclosing but on other enclosing scopes.

youdao

最后，全封闭的电池组可提供16.5到22瓦小时的连续操作(取决于电池技术)。

Finally, a fully enclosed battery pack provides between 16.5 and 22 watt-hours of operation (depending upon cell technology).

youdao

只要您根本不希望这些分隔开的、封闭的系统相互操作，您就不会有问题(也许，除了需要记忆大量的标识符之外)。

As long as you never want those separate, closed systems to interoperate you'll have no problem (aside, perhaps, from a surfeit of IDs to remember).

youdao