broadcast

announce, declare, proclaim, pronounce, advertise, broadcast, publish

这些动词均含“宣布，公开”之意。
announce: 多指首次宣布大家感兴趣或可满足大家好奇心的事情。
declare: 侧重正式就某事清楚明白地宣布。
proclaim: 指官方宣布重大事件或施政方针，语体比announce正式。
pronounce: 词义与announce, declare接近，但较多用于指法律判决方面的宣布。
advertise: 指通过文字和图像资料等的反复宣传而引起公众的注意，有时隐含令人不快或言过其实的意味。
broadcast: 专指利用广播或电视传播消息或发表见解。
publish: 专指通过报刊或其它媒介向公众公布事情。

名词 broadcast:

1. message that is transmitted by radio or television
2. a radio or television show
   同义词：program, programme

动词 broadcast:

1. broadcast over the airwaves, as in radio or television
   同义词：air, send, beam, transmit
2. sow over a wide area, especially by hand
3. cause to become widely known
   同义词：circulate, circularize, circularise, distribute, disseminate, propagate, spread, diffuse, disperse, pass around

1. Before this play is broadcast several cuts must be made.
   这个剧目播出前必须经过数次剪辑。
2. The Prime Minister set forth the aims of his government in a television broadcast.
   首相在电视广播中公布了内阁的工作目标。
3. The broadcast was recorded, not live.
   这次广播是事先录音的，不是现场直播。
4. The chairman's speech will be broadcast nationwide.
   主席的讲话将向全国广播。
5. Here is a political party broadcast before an election.
   这是某党派选举前的政治广播节目。
6. She broadcasts on current affairs.
   她发表时事广播演说。
7. The BBC broadcasts all over the world.
   英国广播公司向全世界播送节目。

broad.cast

v.（动词）
broad.cast 或 broad.cast.ed broad.cast.ing,broad.casts
v.tr.（及物动词）
To transmit (a radio or television program) for public or general use.
传播：传播（电台、电视节目），供大众使用
To send out or communicate, especially by radio or television:
播放：尤指通过电台、电视，播出，发送：
例句：
The agency broadcast an urgent appeal for medical supplies.
代理商通过电台紧急呼吁要求药品供应

To make known over a wide area:
使广为人知：
例句：
broadcast rumors.See Synonyms at announce
传播谣言参见 announce

To sow (seed) over a wide area, especially by hand.
尤指用手播（种）
v.intr.（不及物动词）

To transmit a radio or television program for public or general use.
播放节目：播送电台、电视节目供大众使用
To be on the air:
播放：
例句：
The station begins broadcasting at 'a.m.
电台早晨 ':00开始播音

To participate in a radio or television program.
参加电台、电视节目的演出
To send a transmission or signal; transmit.
发送传递信号；传播
n.（名词）
Transmission of a radio or television program or signal for public use.
传播信号：电台、电视节目或信号的传播，供大众使用

A radio or television program:
电台、电视节目：
例句：
watched the morning news broadcast.
看早晨的新闻节目

The duration of such a program.
播放时间：电台、电视节目持续的期间
The act of scattering seed.
播种
adj.（形容词）

Communicated by means of television or radio.
电视播送的，电台广播的
Of or relating to television or radio communications:
（与）电视或电台通讯（有关）的：
例句：
broadcast journalism; the print and broadcast media.
广播新闻；印刷和广播媒介

Widely known.
广为人知的
Scattered over a wide area.
撒播的
adv.（副词）
In a scattered manner.
四散地

【引伸】
broad.cast.er
n.（名词）