a pain in the ass

基本解释

Marriage can be a pain in the ass.
婚姻可能会像屁股坐在钉子上。
In scientific terms, teenagers can be a pain in the ass. But they are quite possibly the most fully, crucially adaptive human beings around.
从科学角度来看，青少年可能是个讨厌鬼，但他们很可能就是最出色最彻底的环境适应者。
Apple’s App Store is not popular because it gives developers an opportunity to write more software and sell it through a proprietary, pain-in-the-ass storefront system.
苹果的应用商店并不流行是因为它给了开发者机会去写更多的软件而通过一个私有的，痛苦源头的店面系统去销售它。

We choose not to share information for political reasons, to consolidate power, for expedience, or just to avoid dealing with someone who can be kind of a pain in the ass.
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Salespeople are a pain in the ass.
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Most importantly, why is using it to enter in search terms such a terrible pain in the ass?
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