Mr Hathaway attributes this to three main factors.

哈萨维把这个现象归咎于三个主要因素。

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To work successfully is the three main factors of human activities.

立志工作成功是人类活动的三大要素。

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Three main factors play a role in what makes food high or low in energy density.

决定食物能量密度高低的因素主要有三个。

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Three main factors seem to have brought about the Russian change of tack.

ECONOMIST: Caspian carve-up | The

Three main factors are blamed for the likely constraints on long-term finance.

BBC: Warning over infrastructure spending

Although many felt Betamax was the superior format, most cite the longer recording length of VHS tapes - three hours versus one - and the cheaper manufacturing costs for VHS machines as the main factors why VHS eventually won out.

BBC: NEWS | Technology | Q&A: Death of a format