tooth中的oo是哪个音标

tooth中的oo发长元音/u:/。 英语中，字母组合oo发长元音/u:/的单词还有：too(太)，zoo(动物园)，noon(中午)，moon(月亮)，school(学校)，balloon(气球)。

You should pull out this tooth.你必须把这颗牙齿拔掉。In the morning my tooth is not there. But I find some coins!早上的时候我的牙齿不在那了但是我发现了一些硬币。I pictured him with a little one on his knee, helping her write her first letter to the Tooth Fairy.我想象着有一个小宝贝坐在他的膝上，他抱着她，帮她给牙齿仙女写第一封信。

any of the hard white objects in the mouth used for biting and chewing food 牙；齿I've just had a tooth out at the dentist's. 我刚在牙科诊所拔了一颗牙。to brush/clean your teeth 刷牙tooth decay 龋齿false teeth 假牙She answered through clenched teeth(= opening her mouth only a little because of anger). 她咬牙切齿地回答。