One day Oscar was suffering from a serious headache and made a complaint to his wife.

一天， 奥斯卡头痛的厉害，对妻子说他感觉不舒服。

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The light-hearted tone of the messages concealed a serious headache for Apple's Asian competitors.

这些言论的轻松语气背后，隐藏着苹果的亚洲竞争对手们一个极其头疼的问题。

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A headache is important because it can be the first warning of a serious condition that could probably be controlled if discovered early.

头痛得重视，因为它可能是一种严重疾病的第一个预兆，如果及早发现的话，这种严重疾病可能会得到控制。

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Is it more of a headache than it is anything of a serious nature?

WHITEHOUSE: Press Briefing

R. headache to deal with but also a serious loss of trust in the marketplace (BP shares have tumbled to almost half their value since April 21), an internal battle to restore employee confidence and all the fallout of the spill for those along the Gulf of Mexico.

FORBES: Will Dudley Make Us Like BP Again?