您要查找的是不是：
- It's a once in a lifetime chance. 这是一生难得的机会。
- It is a once in a lifetime chance. 这是一生难得的机会。
- Your shirt's hanging out, Ned; tuck it in a once. 你的衬衣下摆露出来了，涅德；快塞进裤子里。
- It's a once of me in a lifetime chance. 这是我一生中难得的机会。
- I have a once she started the clothes on the show. 她一把推开我,开始一言不发的穿衣服。
- You have snarled a once simple proBlem. 你把一个本来很简单的问题弄复杂了。
- "It is a once in a lifetime find ," Latimer said . 拉蒂默说：“这是一个弥足珍贵的发现。”
- a once friend 从前的一个朋友
- They were once friends, but now they are enemies. 他们以前是朋友;但现在是敌人.
- She writes to her parents once a week. 她每周给父母写一封信。
- Under the water lies a once flourishing/prosperous/ thriving city. 水底下躺着一座曾经繁华的都市。
- As a once thriving capital,Yinxu is rich in archeological relics. 作为盛极一时的都邑，殷墟地下文物遗迹十分丰富。
- I used to look on him as a friend. 我以前把他看作是一位朋友。
- Donna call on her friend kita for a chat. 多娜到她的朋友莉塔家闲谈。
- My friend put me in a white-collar slot. 我朋友使我从事一份白领工作。
- His friend was injured in a car crash. 他的朋友在一次汽车事故中受了伤。
- My friend gave me his picture as a memento before going away. 我的朋友在离别前给我一张照片留作纪念品。
- He is a friend in word as well as in deed. 他是个言行如一的朋友。
- More than once I've felt my heart slip a cog. 我不止一次感到心脏突然停跳一下。
- What a shitty way to treat a friend! 这样对待一个朋友，真不像话！
