If you know what your speech is about — and it should be about one thing — you should have an easy time deciding on an opening.

如果你知道你的演讲是关于什么的，它必须是一个方面的，你应该决定让开场轻松。

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When only one opening is opened at any given time, it is necessary to restrict the gate or switch to allow the conveyor to be overloaded at maximum opening.

当在任何给定时间里仅需打开一个进料口时，应限制闸门或开关装置在最大开度时不允许使输送机超载。

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Mr. Bush is on time for everything. How can it be that he was late for the opening ceremony?

布什先生对什么事都很准时，可是他怎么会在开幕式上迟到呢？

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That play, while doubtless the right move for the long term, results in a short term negative as opening new markets is costly and it takes some time before they go from cash draining to cash producing.

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In his opening remarks, Mr Zhang, who is from China, said it was time to "admit that match-fixing is a real danger to football's ethical values and needs to be eliminated to preserve the sanctity of the sport".

BBC: Asia

It is the first time in Iceland's history it has won the opening three matches of a qualifying campaign without conceding a goal.

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