性关系 (xìng guān xi) — sexual intercourse; sexual relationship

定義

例文

• 他们之间发生了性关系。
  Tā men zhī jiān fā shēng le xìng guān xi.
  They had a sexual relationship.
• 性关系是两个人之间的事。
  xìng guān xi Shì liǎng gè rén zhī jiān de shì.
  A sexual relationship is a matter between two people.
• 医生建议年轻人要注意性关系的健康。
  Yī shēng jiàn yì nián qīng rén yào zhù yì xìng guān xi de jiàn kāng.
  Doctors advise young people to pay attention to sexual health.