Collections of exchange of poems almost cover one third of all poem collections in Tang Dynasty.

唱和是唐代诗人创作的重要形式之一，唱和集几乎占唐代诗歌总集的三分之一。

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But now, because the cost of college has skyrocketed, the amount Pell Grants cover is about one-third.

WHITEHOUSE: Making Higher Education More Affordable

In one-third of patients, these lesions cover more than 10% of their bodies.

FORBES: Biogen Gets Amevive Approval