brachialia

例句：

1. 1.The armpits are a common area for bacteria to grow.
   臂窝是细菌生长的常见区域。
2. 2. The armpits can be a source of irritation for some people.
   对于某些人来说，臂窝可能是一个刺激源。
3. 3. The armpits are often overlooked when discussing hygiene.
   在讨论卫生时，臂窝往往被忽视。