ear字母组合在单词中也比较常见，大多出现在一些比较常用的词汇当中
基本发音只有以下5种
ear[i崂 ：ear   hear dear near   clear year beard appear nuclear shear fear rear
ear[e崂：bear  pear  wear  swear
ear[:] ：learn earn earth heard early research search dearth hearten
ear[a:] ：heart hearth
eer[i崂 ：career volunteer cheer jeer deer  beer  engineer peer  pioneer