He picked his teeth with a toothpick.
他用剔。
He picked his teeth with a toothpick.
他用剔。
The light microscope was used to observe the hesion from gums of teeth and focus of infection.
以消取受检者口腔齿龈上或病灶表面附着物,生理盐水涂片,光学显微下观察。
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