Metaphony
内部元音音变, 词内元音变化
🗣️ 情景例句
when is your plane reservation for your flight to Athens?
飞Athens订的是什么时候的班机？
But you have to pay 5% commission on this money exchange.
但兑换这笔外币，您得另外付5%的手续费。
They are very uncomfortable. But women always wear uncomfortable shoes!
的确很不舒适。可是女人们总是穿不舒适的鞋子！