Definition

Examples

• 心脏是循环系统的核心器官。
  Xīnzàng shì xún huán xì tǒng de héxīn qìguān.
  The heart is the core organ of the circulatory system.
• 运动可以改善循环系统的功能。
  Yùndòng kěyǐ gǎishàn xún huán xì tǒng de gōngnéng.
  Exercise can improve the function of the circulatory system.
• 医生检查了他的循环系统。
  Yīshēng jiǎnchá le tā de xún huán xì tǒng.
  The doctor examined his circulatory system.