back wall的用法和樣例：
例句
- We presented a 46 years old woman with posterior wall RVF after the rectal cancer surgery.
我們在此提出一位四十六歲女性，在經過直腸癌手術之後，發現有直腸陰道後壁瘺管。 - The persistent left superior vena cava will drain either in the back of the left atrium or in the coronary sinus.
永存左位上腔靜脈引流左房後壁或者冠狀竇的血液。
辭彙搭配
- have one's back to the wall 處境困難
- fight with one's back to the wall 拚死鬥爭
- have one's back at the wall 被逼到沒退路,負隅死...
- back to the wall 落入圈套
- with one's back to the wall 困獸猶鬥地
