体内 (tǐ nèi) — (attr.) within the body; in vivo; internal to the body

Definition

Examples

• 这种细菌通常存在于人体体内。
  Zhè zhǒng xì jūn tōng cháng cún zài yú rén tǐ tǐ nèi.
  This type of bacteria normally exists inside the human body.
• 他们在动物体内进行了药物测试。
  Tā men zài dòng wù tǐ nèi jìn xíng le yào wù cè shì.
  They conducted drug tests in vivo on animals.
• 患者体内发现了异常肿块。
  Huàn zhě tǐ nèi fā xiàn le yì cháng zhǒng kuài.
  An abnormal mass was found inside the patient's body.