The Italian sonnet form is commony called the Petrarchan sonnet, because Petrarch's "Canzonieri, " a sequence of poems including 317 sonnets, established the sonnet as a major form in European poetry.

意大利体式的十四行诗通常也叫彼得拉克体，彼得拉克创作了由317首十四行诗的组成的诗集--"Canzonieri"，这部诗集确立了欧洲十四行诗的主要形式。

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Independent study should be a major form of study for university students.

自主学习应成为高校学生的一种主要的学习方式。

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Corporate mergers and acquisitions have become a major form of capital operation.

企业并购已成为企业资本运营的一种主要形式。

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Before the age of television and the Internet puppet shows were a major form of entertainment for audiences of all ages all over the world.

VOA: special.2009.09.23

We can really divide it into two major parts. The first 12 chapters form a unit that conveys the invasion and conquest.

我们可以将它分为两部分，前十二章,形成了一个集体，表现了侵略和占领。

耶鲁公开课 - 旧约导论课程节选

This means the cells that are red here have all the information to form the major cell types of the inner ear.

这就是说，用红色标示的细胞具有构成,内耳主体细胞类型的全部信息。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

Certainly I would agree that the school run is a major form of congestion.

BBC: Six forum: Road congestion

Though the shares will be sold from the companies, and Loyal3 will act as the transfer agent, the share purchases (and links offering others the opportunity for similar transactions) will be announced on Facebook, which is likely to become a major form of publicity for the service.

FORBES: The Facebook Connection to Trading Stock

The vastly increased access to a major art form that resulted from the introduction of audio recordings of music in the 20th century.

ECONOMIST: Letters