Cov txheej txheem thiab cov kev daws teeb meem los tswj cov folding sab nraud yog raws li hauv qab no. ①Ua kom zoo ntawm cov pob zeb. Yuav tsum tsis muaj npuas subcutaneous rau ntawm qhov chaw ntawm daim tawv nqaij, thiab cov tawv nqaij txias, indentation, thiab cov kab nrib pleb ntawm cov pob zeb yuav tsum tau ntxuav, thiab ntug ntawm qhov zawj a ...
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