sex

• 指生物和生理特征，将人类及其他动物区分为男性、女性或间性；也指性交行为。

A noun referring to the biological and physiological characteristics that define humans and other animals as male, female, or intersex, or to the act of sexual intercourse.

不可数

1. Biological classificationA2formal

   The state of being male or female, typically based on physical and genetic characteristics.

   生理性别

   • The doctor recorded the baby's sex at birth.
   • Sex is determined by chromosomes.
   • The study examined differences between the sexes.

   同义词gender

2. Sexual activityB1formal

   Physical activity involving sexual intercourse or other intimate acts.

   性行为

   • They discussed safe sex practices.
   • The movie contains scenes of sex.
   • Sex education is taught in many schools.

   同义词coituscopulationcouplingintercourselovemakingmatingsexual intercourse

3. Gender identity (informal)B2informal

   Used informally to refer to gender or sexual orientation.

   性别（非正式）

   • He's a great guy, no matter what sex he is.
   • The form asks for your sex and age.
   • People of all sexes are welcome.

   同义词gendersexuality

• 动词，指确定生物个体的性别；在非正式语境中，指进行性行为。

A verb used to indicate the act of determining the sex of an organism or, in informal contexts, engaging in sexual activity.

1. Determine the sex ofB2formal

   To identify or determine whether an animal or person is male or female.

   鉴定性别

   • The biologist sexed the chicks to study population dynamics.
   • Veterinarians often sex reptiles by examining their scales.
   • The farmer sexed the newborn lambs for record-keeping.

2. Engage in sexual activityC1informal

   To have sexual intercourse with someone.

   性交

   • They were caught sexing in the back of the car.
   • The novel describes characters sexing without emotional attachment.
   • He bragged about sexing multiple partners last weekend.

   同义词bangbedbonkcopulatedo itfornicatefuckget it onhumplaymake lovescrewshagsleep with

短语动词变体sex up