Ostium atrioventriculare dextrum

例句：

1. 1. The patient was taken to the operating room for surgery.
   病人被送往手术室接受手术。
2. 2. The scientist discovered a new species of bird in the Amazon rainforest.
   科学家在亚马逊雨林发现了一种新的鸟类物种。
3. 3. The door opened with a loud creak.
   门砰地一声打开了。