形容词急迫的; 催促的; 强求的; 极力主张的

1. 紧迫的；紧急的；紧要的
If something is urgent, it needs to be dealt with as soon as possible.

e.g. There is an urgent need for food and water...
现在亟需食物和水。
e.g. He had urgent business in New York.
他在纽约有急事。

名词连接; 联系，关系; 连接点; 亲戚

名词伸展，扩大; 延长，延期; [医]牵引; 电话分机

1. （房屋的）扩建部分
An extension is a new room or building which is added to an existing building or group of buildings.

2. （公路、铁路等的）延长线
An extension is a new section of a road or rail line that is added to an existing road or line.

e.g. ...the Jubilee Line extension.
银禧延长线

3. 展期；延长期
An extension is an extra period of time for which something lasts or is valid, usually as a result of official permission.

e.g. He first entered Britain on a six-month visa, and was given a further extension of six months...
他最初持6个月的签证进入英国，后来又获得6个月的续签。
e.g. Ian Lentern has been granted a three-year extension.
伊恩·伦特恩已经被批准延期3年。

4. 扩大;扩展;延伸
Something that is an extension of something else is a development of it that includes or affects more people, things, or activities.

e.g. Many Filipinos see the bases as an extension of American colonial rule...
很多菲律宾人视这些基地为美国殖民统治的延续。
e.g. That's the logical extension of my approach.
那是对我的方法的合乎逻辑的扩展。

5. 电话分机（亦用书面缩略ext.）
An extension is a telephone line that is connected to the switchboard of a company or institution, and that has its own number. The written abbreviation ext. is also used.

e.g. She can get me on extension 308...
她打308分机就能联系到我。
e.g. For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。

6. （设备的）延伸部分
An extension is a part which is connected to a piece of equipment in order to make it reach something further away.

e.g. ...a 30-foot extension cord... 30
英尺的延长线
e.g. Some of the best extensions are made from sections of rod tube or drainpipe.
最好的延长管中有些是用杆管或排水管制成的。

名词消息; 信息; 要旨; 教训

动词给…发消息; 给…留言

1. 音信;消息;留言
A message is a piece of information or a request that you send to someone or leave for them when you cannot speak to them directly.

e.g. I got a message you were trying to reach me...
我收到一条留言，说你想跟我联系。
e.g. Would you like to leave a message?...
您要留言吗？

2. (书、戏剧等的)要旨，主题思想，寓意
The message that someone is trying to communicate, for example in a book or play, is the idea or point that they are trying to communicate.

e.g. The report's message was unequivocal...
报告中传达的信息是明确的。
e.g. I no longer want to stay friendly with her but I don't know how to get the message across...
我再也不想和她做朋友了，但是又不知如何告诉她。

3. (用电脑、手机等)给…发消息，给…留言
If you message someone, you send them a message electronically using a computer or another device such as a mobile phone.

e.g. People who message a lot feel unpopular if they don't get many back...
如果人们发出大量短信但收到的回复却不多，就会觉得自己不受欢迎。
e.g. She messaged him saying she wished they were together.
她给他留言说希望跟他在一起。

及物动词拼写; 导致，意味着; 组成（一个词）的字母是…

不及物动词轮替

名词符咒，咒语; 魅力; 一段时间; 轮班

名词假期，休假; [古] 空出，撤出，辞去

不及物动词度假

1. （大学或美国大中小学的）假期
A vacation is a period of the year when universities and colleges, and in the United States also schools, are officially closed.

e.g. During his summer vacation he visited Russia...
暑假期间他去俄罗斯了。
e.g. Did you have a lot of reading during the vacation?
放假期间你读了很多书吗？

2. 假日;休假
A vacation is a period of time during which you relax and enjoy yourself away from home.

e.g. They planned a late summer vacation in Europe...
他们打算夏末去欧洲度假。
e.g. We went on vacation to Puerto Rico.
我们去了波多黎各度假。