It is a blind detection watermark since we detect watermark by position key and chaos sequence key without original image.

水印的相关检测只需要知道位置密钥和混沌序列密钥，不需要原始图像的参与，因而是盲检测水印方法。

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However, if the planet is in a good position, astronomers look for three key things: water, air and rock.

然而如果这颗行星处于很好的位置，天文学家会寻找三样关键的东西：水、空气和岩石。

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He could be depended on to take a moderate position on most of the key issues.

可以相信，他会在大多数关键问题上持温和态度。

《柯林斯英汉双解大词典》

"I want to emphasize our commitment to the Nigerian market,". "This new flight is a key part of Delta's African expansion and ensures that we maintain our position as the number one US carrier to Nigeria and more broadly to Africa."

VOA: standard.2009.06.13

That is Hirsch's other key position, and we can understand it by saying something like this: the meaning of a text is what the author intended it to mean -that is to say, what we can establish with a reliable paraphrase.

这就是赫施的另一个重要观点，我们可以这样理解它：,文章的意思是作者想要表达的,即我们通过适当的释意能够想到的。

耶鲁公开课 - 文学理论导论课程节选

After the 2002 coup attempt against him, Chavez became so paranoid about losing power he thought it best to surround himself with people who would consider his position key to their survival.

CENTERFORSECURITYPOLICY: Chavez's prisoners

The statement accused the U.S. of changing its position on key issues.

NEWYORKER: After America

Rarely has any pro-gun-rights Democrat representing a rural and Southern district broken with the NRA's position on key votes, especially in an election year.

CNN: Boehner: Contempt vote on Holder will proceed