echidnae

echidnae的音标为/"i:kɪdnɪə/，基本翻译为“有袋类动物”，速记技巧为：有袋动物像“刺猬”。

Echidna这个词源于希腊语，意为“hairy lizard”，它是由词根“ekh”和词尾“na”组成。它的变化形式包括其复数形式Echindnas和其过去式和过去分词Echidnas。

相关单词：

Echidnae（雌性穴居动物）：这个词用来指代雌性的穴居动物，它来源于其名称的复数形式。

Echidnosis（穴居动物学）：这个词用来描述研究穴居动物的科学，它来源于其名称的词干部分。

Echidnaic（穴居的）：这个词用来描述具有穴居特性的，它来源于其名称的形容词形式。

此外，与Echidna相关的单词还有echinoderm（海生无脊椎动物）、echinidae（海胆科）、echinopluteus（海盘车）等，这些单词都与海生无脊椎动物有关。这些单词都描述了这些生物的形状和特征，以及它们在海洋生态系统中的角色。

总的来说，Echidna这个词及其相关单词描述了生物的种类、特征以及它们在生态系统中的作用，体现了语言和科学之间的紧密联系。

常用短语：

1. come up with 想出

例句：I finally came up with a solution to the problem.

2. take it easy 放松

例句：Take it easy, everything will be alright in the end.

3. get along with 与...相处

例句：I"m trying to get along with my roommate, but it"s not easy.

4. look forward to 期盼

例句：I look forward to receiving your reply.

5. as for 至于

例句：As for my opinion, I"m still thinking about it.

6. on the one hand…on the other hand 一方面…另一方面

例句：On the one hand, I"m excited about the trip, but on the other hand, I"m nervous about being away from home.

7. in a word 总而言之

例句：In a word, we should try our best to solve the problem.

英文小作文：

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