/ˈsɛkʃuəl ˈɪntərkɔrs/ – Phrase
Definition: giao cấu, quan hệ tình dục.
A more thorough explanation: Sexual intercourse is defined as the physical act of sexual penetration or contact between individuals involving the genitalia of one person and the mouth, anus, or genitalia of another person.
Example: The age of consent for sexual intercourse in this jurisdiction is 18 years old.