半天的英文：
half of the day
a long time
quite a while

参考例句：
  • He could not find his fifty pence piece anywhere.
    他摸了半天也没找到那50便士硬币。
  • About half a day.
    大约半天。
  • The boss pondered for a long time and decided to wait for the highest bid.
    老板思考半天，决定待价而沽。
  • He spent hours gazing into the distance.
    他半天一直凝视着远方。
  • We had been waiting for him for a long time, yet he didn't turn up.
    等了半天也没见他来。
  • Throughout the entire altercation, not one sensible word was uttered
    争了半天,没有一句话是切合实际的。
  • He remained tongue-tied for a long time
    他半天说不出话来。
  • He spent half the day arsing around.
    他一天有半天在闲混。
  • He was stumped by the questions and remained tongue-tied for a good while.
    他被问得张口结舌，半天说不出话来。
  • I didn't know what thing to buy, and I searched for a half a day.
    我不会买东西,我挑了半天。
half是什么意思：
n. 一半；半场，半局
adj. 一半的，不完全的
adv. 一半地，部分地
  • That is a job and a half.
    那是非常困难的工作。
  • half-believe ";"half believing, half doubting
    将信将疑
day是什么意思：
n. 一天；白昼，白天；工作日；时代，时期
  • Things go on day by day.
    事情逐日进行着。
  • Day by day the situation is improving.
    情况在一天天地好转。
  • Like this, day after day.
    就这样，日复一日。
long是什么意思：
adj. 长的；长时间的；冗长的；长音的
adv. 长久地，长期地；始终
n. 长时间，长时期；长音节
v. 渴望
abbr. 经度，经线
  • But perhaps not for long.
    但这并不会持续太长时间。
  • It will take a long time to read through this long story.
    要读完这长篇故事要花相当长的时间。
  • propagation of long and very long wave in the ionosphere
    电离层长波和超长波传播

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