once
美[wʌns] conj.一旦…就…；一经
n.一次，一回
网络一次；一度；曾经；曾
1 . It had once been the home of a wealthy nobleman.
这里曾是一个有钱贵族的宅邸。
来自柯林斯例句
2 . We tend to meet up for lunch once a week.
我们往往每周共进一次午餐。
来自柯林斯例句
3 . He once told an interviewer that he didn't even like rock music.
他曾告诉一位采访者，他甚至都不喜欢摇滚乐。
来自柯林斯例句
4 . Once wholesale prices are deregulated, consumer prices will also rise.
一旦批发价格放开，零售价格也会随之上涨。
来自柯林斯例句
5 . He took off at once and headed back to the motel.
他立刻离开，回到汽车旅馆。
来自柯林斯例句
1.belonging to some prior time;
erstwhile friend
2.on one occasion;
once I ran into her
3.as soon as;
once we are home, we can rest
4.at a previous time;
once he loved her
简介 英文单词：once：once英音：[wʌns]美音：[wʌns] 副词ad. 1.一次，一回 I see them onceevery two months. 我每两个月与他们见一次面。 2.昔日，曾经 He onceknew her, but they are no longer friends. 他以前认识她，但他们已经不是朋友了。 名词n. 1.一次，一回 Onceis enough. 一次就够了。 连接词conj. 1.一旦，一经。..便 Onceyou get into a bad habit, you'll find it hard to get out of it. 一旦