tooth中的oo是哪個音標

tooth中的oo髮長母音/u:/。 英語中，字母組合oo髮長母音/u:/的單詞還有：too(太)，zoo(動物園)，noon(中午)，moon(月亮)，school(學校)，balloon(氣球)。

You should pull out this tooth.你必須把這顆牙齒拔掉。In the morning my tooth is not there. But I find some coins!早上的時候我的牙齒不在那了但是我發現了一些硬幣。I pictured him with a little one on his knee, helping her write her first letter to the Tooth Fairy.我想象著有一個小寶貝坐在他的膝上，他抱著她，幫她給牙齒仙女寫第一封信。

any of the hard white objects in the mouth used for biting and chewing food 牙；齒I've just had a tooth out at the dentist's. 我剛在牙科診所拔了一顆牙。to brush/clean your teeth 刷牙tooth decay 齲齒false teeth 假牙She answered through clenched teeth(= opening her mouth only a little because of anger). 她咬牙切齒地回答。