extraction of impacted third molar

例句：

1. 1. The dentist extracted thetooth with a drill.
   牙医用钻头取出了那颗牙齿。
2. 2. Thesurgeon performed an extraction ofthe tumor.
   外科医生进行了肿瘤的摘除手术。
3. 3. Theprocess of extracting mercury from the soil isknown as chromatography.
   从土壤中提取汞的过程被称为色谱法。