Definition
To perform oral sex, typically referring to either cunnilingus performed on a woman or fellatio performed on a man.
口交
During their intimate moment, he offered to give her head.
在他们的亲密时刻，他主动提出要为她口交。
She enjoys the sensation when he gives her head.
她很享受他为她口交时的感觉。
In their sexual relationship, giving head is one way they express affection.
在他们的性关系中，为对方口交是他们表达爱意的方式之一。