However, this isn't the problem with the twin girls.

然而，这不是双胞胎女孩的问题。

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Dr CarolTurley, a scientist at Plymouth University's MarineLaboratory, said the research highlighted the growing problem of oceanacidification, the so-called "evil twin" of global warming."Oceans

普利茅斯大学海洋实验室的科学家卡罗尔·特利博士称，研究表明海洋酸化问题（也就是所谓“全球变暖的孪生恶魔兄弟”）正日益加剧。

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An existence theorem of twin positive solutions is established for a nonlinear fourth-order two-point boundary value problem.

对于非线性四阶两点边值问题建立了一个孪生正解的存在定理。

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"The central problem lies in the twin role of the FSA - it is supposed to look after the consumer and prevent damage to the UK financial sector, " Louise Hanson, Consumers' Association spokeswoman told BBC News Online.

BBC: NEWS | Business | Watchdog grilled over mis-selling

Louis and the Twin Cities have tried to solve this problem by throwing money at it.

FORBES: Restrictive Zoning Is Crippling Silicon Valley's Transit Options

The lifting bridge closed for 10 days on Tuesday but the Twin Sails bridge broke down for 90 minutes in its "up" position with a hydraulic problem.

BBC: Poole lifting bridge closure criticised