n.性交

Coitus is the scientific term for sexual intercourse between a male and female.
- "Coitus"是科学上用来描述雄性和雌性之间性交的术语。
The couple engaged in coitus as part of their intimate relationship.
这对夫妇在他们的亲密关系中进行了性行为。
Coitus interruptus, or the withdrawal method, is a form of contraception.
阴茎抽出法（Coitus Interruptus）或称中断性交，是一种避孕方法。
The act of coitus can lead to the transmission of sexually transmitted infections if precautions aren't taken.
如果不采取预防措施，性行为可能会传播性病。
In some cultures, coitus before marriage is considered taboo.
在某些文化中，婚前性行为被认为是禁忌的。
Coitus is not the only way for reproduction in humans; assisted reproductive technologies also exist.
性行为并不是人类繁殖的唯一方式，辅助生殖技术也存在。
The frequency of coitus varies greatly among couples and can be influenced by factors such as age, stress, and relationship satisfaction.
性行为的频率在夫妻间差异很大，可能受到年龄、压力和关系满意度等因素的影响。
Coitus can sometimes result in emotional intimacy and deepening of a romantic relationship.
性行为有时会导致情感亲密感的增强，使浪漫关系更加深厚。
In certain species, coitus is necessary for fertilization, while in others, external fertilization occurs.
在某些物种中，性行为是受精所必需的，而在其他物种中则发生体外受精。
The concept of consent is crucial in discussions about coitus to ensure that all parties involved are participating willingly.
在讨论性行为时，同意的概念至关重要，以确保所有参与者都是自愿参与的。