CBB

CBB音标的基本翻译为“双唇紧闭，声带振动，舌头后缩，舌尖轻抵上齿背” ，速记技巧为“闭而不紧，留空隙，舌位稍低，音位稍偏”。

CBB这个词的英文词源是"Central Business Block"，它通常指的是商业区或市中心的核心区域。这个词源于英语，并且它的变化形式包括复数形式"CBBs"和过去式形式"CBBed"。

相关单词：

"Central"：这个单词在这里表示中心或核心的意思，它本身也有其他含义，如中心、中央等。

"Business"：这个单词表示商业或商务的意思，它也有其他含义，如职业、生意等。

"Block"：这个单词表示阻挡、阻止的意思，同时也有块、阻塞物等含义。

除此之外，CBB还可以引申出许多其他相关单词，例如CBB银行（中央商务银行）、CBB购物中心（中央商务区购物中心）、CBB保险（商业保险）等。这些单词都与CBB这个词源有着密切的联系，并且都与商业和市中心的核心区域有关。

常用短语：

1. CBB (Central Business District)

2. common knowledge

3. by and large

4. cater to

5. in a nutshell

6. on the one hand...on the other hand

7. take for granted

例句：

1. CBB is the heart of a city, where businesses and government offices are located.

2. Common knowledge is something that most people agree is true.

3. By and large, people prefer to live in cities rather than in the country.

4. The restaurant aims to cater to all tastes of its customers.

5. In a nutshell, this article explains how technology has changed our lives.

6. On the one hand, I enjoy the freedom of living alone; on the other hand, I miss having someone to share my life with.

7. We take for granted the convenience of modern life, such as online shopping and instant communication.

英文小作文：

Central Business District (CBD)

CBD is a busy and bustling place where businessmen, government officials, tourists and others gather to do business or seek information. It is a hub of activity, with shops, restaurants, offices and other facilities available for those who need them. The CBD is also a place where people can enjoy the city"s skyline and other attractions.

In the CBD, people can find everything from high-end shopping to simple necessities, making it a convenient place to be. It is also a place where people can compare prices and quality to make sure they are getting the best deal possible.

However, the CBD can also be a stressful place, with long queues, crowds and high rents making it difficult for some people to afford living there. Therefore, it is not only a place for business and government activities, but also a place where people can relax and enjoy themselves.