casual sex

casual sex的音标为["kæʒuəls ʃek]，意思是非正式的性行为。

速记技巧：可以尝试使用缩写形式，如“cas sex”，这样更易于记忆。

Casual sex这个词的英文词源可以追溯到拉丁语中的“casualiter”，意为“偶然地，意外地”。这个词在英语中用来描述非正式的、随意的性行为。

变化形式：在词形上，casual sex没有明显的变化形式，它就是一个固定的词组。

相关单词：

1. unplanned：意为“未经计划的，未预见的”，这个词和casual sex有相似的含义，都表示非正式、随意的行为。例如，“unplanned encounter”可以翻译为“意外相遇”。

2. indiscriminate：意为“不加选择的，随意的”，这个词可以用来描述casual sex的对象或行为方式。例如，“indiscriminate touching”可以翻译为“随意触碰”。

3. frivolous：意为“轻率的，轻浮的”，这个词也可以用来形容casual sex的态度或行为。例如，“frivolous behavior”可以翻译为“轻浮的行为”。

Casual sex在现代社会中越来越普遍，但有些人认为它可能涉及到一些道德和伦理问题。无论怎样，这个词都反映了现代社会对于性行为的开放态度和多元化选择。

以上内容仅供参考，建议查阅专业的英语词典获取更准确的信息。

常用短语：

1. casual hookup

2. casual encounter

3. casual sex

4. one-night stand

5. no-strings-attached sex

6. random hookup

7. random encounter

例句：

1. I had a casual hookup with my friend"s ex-boyfriend and it was fun but weird.

2. I"m not looking for anything serious, just a casual encounter tonight.

3. We had casual sex and it was great until she wanted a relationship.

4. He asked for a one-night stand and I agreed because it was easy money.

5. No strings attached, just enjoy the moment.

6. I met someone at a bar and we ended up having a random hookup.

7. I always enjoy meeting new people and having a random encounter can be fun too.

英文小作文：

Casual Sex

Casual sex is becoming more common these days, with people preferring to have sexual relationships without the commitment of a long-term relationship. For some, it can be a way to explore their sexuality without the pressure of being in a relationship, while for others, it can be a way to connect with someone on a deeper level without the emotional baggage that comes with a traditional relationship.

However, casual sex can also bring up some complicated issues, such as boundaries, communication, and trust. It is important to be clear about what you are looking for and how you want to proceed with the other person, and to be open and honest about your expectations and boundaries from the beginning.

On the other hand, casual sex can also be a way to connect with someone on a deeper level, and it can lead to more meaningful relationships in the future. It all depends on how you approach it and how you handle the resulting emotions and experiences. Whatever your reasons for wanting casual sex, it is always important to be clear about your boundaries and expectations, and to respect the other person"s boundaries and decisions as well.