internal

/ˌɪnˈtərnəl/

happening or arising or located within some limits or especially surface

中文释义：内部的；体内的

The company is conducting an internal investigation into the matter.

公司正在对此事进行内部调查。

Internal bleeding can be life-threatening if not treated promptly.

内出血若不及时治疗可能危及生命。