demi-的音標是[demi]，基本翻譯是“半; 中間; 副手; 半數”。速記技巧是利用諧音速記法，可以快速記憶demi-這個單詞，將其轉化為“帶米”，這樣記憶起來會比較深刻。

demi-的英文詞源可以追溯到拉丁語詞根"medius"，意為"中間的，一半的"。它的變化形式主要有前綴"demi-"和后綴"-demij"。

相關單詞：

demijohn：半瓶酒，半桶水

demisize：半號尺寸

demit合同：半份合同

demitake：半份訂單

demipenny：半便士

demi-god：半神

demi-lune：半月形

demi-carat：半克拉

demi-pint：半品脫

demi-skirt：半截裙

這些單詞都反映了demi-在英語中的使用，它表示“一半”或“部分的”。這些單詞在日常生活中非常常見，幫助我們理解這個詞根的含義和用法。例如，"demi-pint"是一個常見的酒瓶容量單位，表示半品脫。而"demi-god"則表示半神，是一個比喻，形容某人在某一方面有卓越的才能或表現。

常用短語：

1. demi-lune

2. demitag

3. demijohn

4. demitree

5. demitube

6. demitone

7. demi-demi

例句：

1. The moon is a half-moon tonight.

2. Can you play a demitag?

3. I"m drinking a demijohn of beer.

4. This is a demitree that I bought from the market.

5. The demitube is very useful for storing water.

6. I"m learning to play the demi-tone guitar.

7. Can you help me with the demi-demi task?

英文小作文：

My favorite instrument is the guitar, and I"m learning to play the demi-tone version, which is a unique and beautiful sound that I enjoy playing and listening to. I love how it can create a relaxing atmosphere in my room or accompany me while I"m doing my homework or reading a book. I also enjoy playing with my friends and singing along to the songs we play, which brings us closer together and creates a fun and enjoyable experience. I hope to continue learning and playing the demi-tone version of the guitar for many years to come!