Exclusive care by the male parent is much less common, but it does occur.

由男性家长单独照顾的情况要少得多，但这种情况确实存在。

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Asthma, a bronchial condition, is much less common ailment than hay fever, an allergic inflammation of the nasal passages.

哮喘是一种支气管疾病，比花粉热（一种鼻道的过敏性炎症）要少见得多。

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Luckily, these are much less common, but are very serious illnesses.

幸运的是，这些症状并不常见，而它们仍然是非常严重的疾病。

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Bilateral paralysis is much less common than unilateral paralysis of the vocal cords.

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Nowadays banks are making the math a little bit harder, since 0% transfer fees are becoming much less common.

FORBES: Surprise, Balance Transfer Fees Are on the Rise

The films loaded with special effects that dominate the summer and Christmas holidays will not, however, become much less common or cheaper to make.

ECONOMIST: Hollywood in the recession