The toothbrush gently removes plaque without damaging the gums or causing bleeding.
《柯林斯英汉双解大词典》
3
其它表现包括结膜下出血，眼球内陷，面颊部和上牙床处感觉减退，皮下气肿或可触及眶缘后退。
Other findings include subconjunctival hemorrhage, enophthalmos, hypoesthesia of the cheek and upper gum, subcutaneous emphysema, or a palpable step-off of the orbital rim.
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