音标：[prәu'lɒŋ] ；柯林斯词典等级：1 级；

vt. 延长, 拖延, 拖长
[化] 冷凝管

v. lengthen in time; cause to be or last longer
v. lengthen or extend in duration or space

词型变化：现在分词 : prolonging ; 过去分词 : prolonged ; 第三人称单数 : prolongs ; 过去式 : prolonged ; 名词复数形式 : prolongs
考试类型：[六级/考研/托福/IELTS/GRE]

词性分布：

动词100%

prolong的用法和样例：

例句

用作及物动词(vt.)

How can we endeavor to prolong the brevity of human life?我们怎样才能延长短促的人生？
The meeting may be prolonged into the evening because so many problems have to be solved tonight.会议可能要延长到夜里，因为今晚有太多问题要解决。
Low leakage current helps to prolong battery life.低漏电流有助于延长电池使用寿命。
Clear evidence of his intent is to prolong the ritual.显然他意在拖延典礼时间。
The defendant feigns illness to prolong the trial.为了拖延审判,被告装病。
Don't prolong the agony just tell us the result!别再让我们著急了--快告诉我们结果吧！

常见句型

用作动词(v.)

用作及物动词S+ ～+n./pron.

The book fair has been prolonged due to some reason.由于某种原因，书展被延长了。
The ceremony will be prolonged by ten minutes.仪式将延长10分钟。

S+～+ v -ing

Two countries prolonged signing an agreement until details could be agreed on.两国推迟签约直到就细节达成协议。

词汇搭配

prolong the period of validity延长有效期
prolong life延年益寿

经典引文

Lack of brothers..prolonged my childishness.
出自：Day Lewis
I don't think there's much point in prolonging this.
出自：R. Thomas

【近义词】

extend延伸
lengthen加长
stretch伸展
elongate延长
delay耽搁
protract延长
draw out抽出
spin out尽力维持一些日子, 拖长...
persist坚持
amplify扩大
aggrandize增加
drag out拖延
out出
drag拖
keep up保持继续维持跟上(...
sustain支持
suspend暂停
defer推迟
postpone延期
put off不安

【反义词】

shorten弄短

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