发音
舌抵下齿
逐渐上卷
双唇张开

单词
hear near year
hero zero theory
beer career peer
here mere severe
cashier fierce tier
appear beard clear
period material serious
bacteria cereal coherence
engineer volunteer atmosphere

句子
The hero likes beer.
We can hear it clearly.
The cereal tastes good.
He works as an engineer.
Next year will be a new era.

同音
[ɪə]
cereal serial
dear deer
hear here
peer pier