echinid

echinid的音标是/ɪˈtʃɪnɪd/，基本翻译是“海胆纲”。速记技巧可以使用谐音法，将其记作“一吃你弟”，这样能够快速记住这个单词的发音和含义。

Echinid这个词来源于希腊语，表示“海胆”或“有棘的”。它的变化形式包括复数形式echinides，过去式和过去分词形式echinid，现在分词形式echinid。

相关单词：

Echinoderms：意为棘皮动物，是一类海洋生物，包括海星、海胆、海参等。它们具有非常多刺的外皮，是研究生物进化和海洋生态的重要对象。

Echinocereus：意为棘星虫，是一种常见的仙人掌科植物，具有多刺的外表和独特的生长方式。

Echinacea：意为棘仙人掌，是一种常见的药用植物，用于治疗炎症和增强免疫力。

Echinodermatous：意为棘皮动物的，用来形容一类具有棘皮动物特征的生物或物体。

Echinodery：意为棘皮动物学，是研究棘皮动物的一门科学。

以上这些单词都与Echinid这个词有直接或间接的联系，体现了这个词在英语中的广泛应用和丰富的含义。

常用短语：

1. Eat one"s words 食言

例句：He suddenly changed his mind and refused to eat his words.

2. Beat around the bush 绕弯子

例句：He always likes to beat around the bush when he talks about his work.

3. Get one"s feet wet 开始涉足

例句：She decided to get her feet wet by volunteering for a local charity.

4. Take the bull by the horns 直面问题

例句：He decided to take the bull by the horns and confront his boss about the delay in his project.

5. Keep one"s options open 保持选择权

例句：He didn"t commit to any decision and kept his options open in case he changed his mind.

6. Let the cat out of the bag 泄露秘密

例句：She didn"t realize that she had let the cat out of the bag when she told her friend about her boss"s secret project.

7. Pay the piper 偿还债务

例句：After years of extravagant spending, he finally had to pay the piper by working multiple jobs to make ends meet.

英文小作文：

When it comes to relationships, communication is key. Whether it"s with friends, family, or significant others, we all need to be able to express ourselves clearly and honestly. However, sometimes we find ourselves hesitating to speak our minds because we"re afraid of hurting someone"s feelings or causing a conflict. But in order to build healthy relationships, we have to be willing to take risks and let the cat out of the bag when necessary. It may be uncomfortable in the short term, but it can lead to greater understanding and closeness in the long run. On the other hand, if we choose to keep our options open and avoid confrontation, it can lead to resentment and distance over time. So, it"s important to strike a balance between expressing ourselves and keeping our options open, while also being willing to take responsibility for our actions and learn from our mistakes. In conclusion, communication is essential for building healthy relationships, but it requires courage and self-awareness to be effective.