This should always be the first thought when looking to provide a demonstration or proof of concept.

在提供概念的演示或证明时，这应该始终是第一个要考虑的。

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The first thought is not necessarily the right one.

首先想到的不一定就是正确的。

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The first thought if you are hit by turbulence is to make the aeroplane safe.

一旦遭遇乱流你首先想到的就是要保证飞机的安全。

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Eartha Kitt said the First Lady asked her why she thought there was so much youth crime in America.

VOA: special.2009.06.07

We naturally thought that it was the poet John Milton who was speaking the first 185 lines of the poem.

我们自然会认为是诗人弥尔顿自己,在言说着前185行诗。

耶鲁公开课 - 弥尔顿课程节选

when I first thought about taking the train, I was like,

我刚想要坐火车的时候，我有点，

利用大众交通工具吧 - SpeakingMax英语口语达人

It was quite a long process from the first thought to coming to make the work.

BBC: Boat on beach wins Wales Artist of the Year prize

Critics say energy saving should be the first thought of an energy bill, not an apparent afterthought.

BBC: Energy Bill: Big polluters may be exempted

The first thought in my head was that something bad had happened, so I got very nervous.

WHITEHOUSE: Remarks of Dr. Jill Biden at the OJJDP National Conference