Some speculate that China's "one child" policy has increased the demand for pets.

一些人猜测中国的独生子女政策加大了对宠物的需求。

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Some speculate that Lafite's popularity in China is partly because it is easier to pronounce than its rival first-growths.

有人推测，拉菲之所以在中国受追捧，部分原因在于这个名称比其它一级葡萄酒好念。

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Hybrid vigour is common in plants and is found in some animals-though, some speculate, it may be lacking in European royalty.

杂交优势通常在植物中非常普遍在一些动物中也有体现——不过有人猜测，在欧洲皇室中缺乏这种效应。

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In light of the Pakistani Taliban's alleged involvement, some speculate there could be a shift in US policy toward Pakistan.

VOA: standard.2010.05.18

One of the things you kind of speculate about, and wonder about, why did some cities send out lots of colonies, some cities send out only a few, and others none at all for quite a while.

也许你感到疑惑的一件事是,为什么有些母邦派出了大量移民,另一些只有一些移民,还有其他母邦在很长时间根本没向外移民呢

耶鲁公开课 - 古希腊历史简介课程节选

The goal, some speculate, may be to add a less negative vibe to the reports.

FORBES: Accounting to Change in Unemployment Report

She died, some speculate from a drug overdose, in 1954 at the age of 47.

FORBES: Frida On The Block

Some speculate that the two men's desire for legacies might encourage a meeting before then.

ECONOMIST: Taiwan, China and Ma Ying-jeou