"book音标oo发什么音"...book音标oo发什么音
"look音标"...look音标
"food音标"...food音标
"football音标"...football音标
"books音标"...books音标
"cook音标"...cook音标
"foot音标"...foot音标
"good音标"...good音标
"room音标"...room音标
"close音标"...close音标