Needs are very basic, and should be easy to recognize.

需要的东西很简单，而且应该很容易就能认出。

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Images must be easy to recognize, even for users who have poor vision.

图像要容易辨别，甚至对那些视力差的用户。

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Should be very easy to recognize.

应该是很容易识别的。

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The problem is, and always has been, that the very nature of synergies is that they are cruel entities that appear to be easy pickings but really are much more challenging to recognize, much less capitalize upon.

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