small impurities造句

• That machine passes to stab the nail primarily to the seed cotton in line up miscellaneous the stroke on the net , tie the seed cotton loose and threw away seed cotton small impurities and dust , to change the external appearance condition , in order to spend in the stranding
  三辊清花机该机主要通过刺钉对籽棉在排杂网上的打击，将籽棉打松并去掉籽棉中细小杂质和尘土，以改变外观状态，以便于轧花。