hard-on

hard-on的音标为[hɑːd ɒn]，基本意思是“硬”、“猛烈地攻击”、“固执地坚持”、“过度劳累而病”。

速记技巧：可以尝试使用音标记音，或者结合单词的发音特点进行记忆。

Hard-on这个词通常指的是一种生理反应，即男性对性刺激的反应，通常表现为阴茎的勃起。这个词的词源可以追溯到古英语，其中“hard”表示“坚硬的”或“强硬的”，“on”表示“在…上”。

变化形式：名词形式为hard-on syndrome，形容词形式为hard-on。

相关单词：

1. Hard-on（勃起）：这是最直接和最常见的相关单词，通常用于描述男性对性刺激的反应。

2. Erection（勃起）：这是一个常用的英语单词，与hard-on意思相近，但更正式。

3. Stimulus（刺激）：这个词通常与性刺激有关，可以指任何引起反应的因素。

4. Response（反应）：这个词可以指身体对刺激的反应，包括性刺激引起的勃起。

5. Sensitivity（敏感）：这个词通常与身体部位的反应有关，包括对性刺激的敏感度。

6. Phallus（阴茎）：这是一个常用的英语单词，与hard-on相关的意思。

7. Penis（阴茎）：这是一个更正式的英语单词，与phallus意思相近。

8. Erogenous Zone（性敏感区）：这是一个描述身体部位对性刺激敏感区域的术语，包括阴茎等区域。

9. Sexual Arousal（性兴奋）：这个词通常与性刺激和性欲有关，可以包括hard-on这种生理反应。

10. Orgasm（高潮）：这是一个描述性高潮的术语，也可以包括男性在受到性刺激时的勃起和高潮时的快感。

常用短语：

1. hard-on for (someone/something)：非常生气或不满

2. have a hard-on：持续勃起

3. get hard-on：对某事或某人产生强烈的感情

4. be hard-headed：冷静的，不感情用事的

5. take a hard-line stance：采取强硬立场

6. be hard-working：努力工作的

7. have a hard time doing sth：做某事有困难

例句：

1. I am really hard-on with my son for not doing his homework on time.

2. She got hard-on when she saw her boyfriend with another girl.

3. We need to be hard-headed and accept that we can"t change the world overnight.

4. He took a hard-line stance against the government"s policies.

5. She worked hard all day long to earn money for her family.

6. It"s hard for me to study when my roommate is always making noise.

英文小作文：

My hard-working friend

My friend is a hard-working person who always puts in the effort to achieve his goals. He never gives up easily and always finds a way to overcome any obstacle that comes his way. He is always focused on what he wants to achieve and never loses sight of his goals. He is a determined person who never takes no for an answer and always strives to improve himself and his situation. He is someone who I admire and look up to because of his perseverance and dedication to his goals. I hope to be like him one day and work as hard as he does to achieve my own goals and dreams.