by air

by air的音标是[baɪ ɑː(r)]，基本翻译是“乘飞机”，速记技巧是：比爱肉（谐音）飞（飞机）。

by air的英文词源是拉丁语，意为“通过空气”。它的变化形式包括：

1. by air（乘飞机） - 由空气或空中运输的意思，常用于表示乘坐飞机出行。

2. airmobile（航空的） - 由air和mobile两个词组成，表示与空气相关的、能够移动的。

3. aerial（空气的，航空的） - 词源同air，表示与空气相关的。

by air的相关单词有：

1. airline（航空公司） - 指提供空中运输服务的公司。

2. aeroplane（飞机） - 指用于空中运输的工具。

3. take off by air（乘飞机起飞） - 指通过空中运输工具离开某个地方。

4. land by air（乘飞机着陆） - 指通过空中运输工具到达某个地方。

5. air traffic control（空中交通管制） - 负责控制空中交通的机构或人员。

6. airborne（空中的） - 指在空中飞行或运输的。

7. airlift（空运） - 通过空中运输方式进行的运输方式。

8. airmail（航空邮件） - 通过空中运输方式发送的邮件。

9. air freight（航空运费） - 指通过空中运输方式支付的费用。

10. air transport（航空运输） - 指通过空中运输方式进行的货物或人员运输。

这些单词都与by air这个短语有关，表示通过空中运输的方式进行各种活动。

常用短语：

1. by airplane

2. by airmail

3. by helicopter

4. by airlift

5. by private jet

6. by airfare

7. by airbridge

例句：

1. I took a flight to New York by airplane.

2. Please send this letter by airmail.

3. The helicopter landed on the helipad.

4. The city was airlifted to safety during the earthquake.

5. He owns a private jet and flies around the world.

6. The cost of airfare has gone up recently.

7. We need to build an airbridge to connect our two cities.

英文小作文：

Air Travel - A Great Way to See the World

Air travel has become an essential part of modern life, allowing us to visit faraway places and meet new people with relative ease. From airplanes to helicopters, private jets to airbridges, air travel has opened up a world of possibilities for those who choose to take to the skies.

Whether it"s for business or pleasure, air travel has become a popular way to see the world. It"s fast, convenient, and allows us to escape from our daily routines and immerse ourselves in new cultures and environments. From the bustling cities to the serene beaches, we can experience it all from the comfort of an airplane.

However, air travel also comes with its challenges and concerns. Air travelers need to be aware of safety regulations and procedures, as well as the environmental impact of flights on our planet. But with advances in technology and better policies in place, air travel is becoming safer and more sustainable, making it an even more attractive option for those who want to see the world.

In conclusion, air travel has become a popular way for people to see the world. It"s convenient, fast, and allows us to experience new cultures and environments. But it also comes with its challenges and concerns, and we need to be aware of these as we continue to embrace air travel as a way of getting around.