“纸”怎么读？

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她撕下两格纸巾，然后纵向对折。She tore off two sections of paper towel and folded them lengthwise.他把那沓纸揉得嚓嚓响。He crunched the sheets of paper in his hands.她拿起一张纸，把它哗哗啦啦地塞到打字机中。She took up a sheet and ratcheted it into the typewriter....