Sentence:  There is one exception to the above statement as has been pointed out , and that is that fluids can relax by flowing into <WSD>fields</WSD> of lower rates of shear , so the statement should be modified by stating that the mechanics are similar . 
Meaning of the word marked with <WSD> tags:  the space around a radiating body within which its electromagnetic oscillations can exert force on another similar body not in contact with it