警方掌握了不利于该罪犯的确凿事实。

The police have a clear case against the prisoner.

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菜单标签对选择食物的影响尚无定论，而且规定刚刚实行，没有确凿事实依据。

The effect of menu labelling on dietary choices remains unclear, and the regulations are too new to produce much evidence.

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培养一种主张型口才风格，并以确凿事实和例子来支持，从而来让别人的注意力放在你的想法和提议上。

Develop an assertive style, backed with solid facts and examples, to focus others' attention on your ideas and proposals.

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