In half an hour's whirl of activity she does it all.

在半个小时马不停蹄的忙碌中，她做完了这一切。

《柯林斯英汉双解大词典》

He notes that services make up well over half of economic activity in most rich countries, but there are no common standards for measuring their inventiveness.

他指出服务业在富有国家占据了超过一半的经济活动，但是对于衡量他们的创造力没有一个共同的标准。

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In random visits to 200 primary schools in India, investigators found no teaching activity in half of them at the time of visit.

调查人员在印度对200所学校进行随机访问时发现，有半数的学校在访问时没有教学活动。

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Ancelotti had pinned much of his hopes on the pairing of Drogba and Torres, but they were kept at bay until a late flurry of first-half activity finally unsettled United's defence.

BBC: Chelsea 0-1 Man Utd

The 51 banks registered there account for more than half the economic activity of the Island.

BBC: NEWS | Business | Taxman targets offshore savers

However, more than half of that activity was a single company, EQR, and the total represented less than 0.25% of outstanding shares.

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