inner race的用法和樣例：
例句
- I noticed an inner ring within the bull's-eye.
我注意到，在靶心中還有一個內圈。 - A black horse was on the inside track at the start of the race.
賽馬一開始，一匹黑馬便一馬當先，衝到內圈。 - Take Inner Ring Road exit Wuzhong Road.
沿著內環高架路，在吳中路出口下。 - Notice the outer longitudinal and inner circular muscle layers.
食管肌層內環外縱。
