Atria

例句：

1. 3.
   音乐术语
2. 1.The atrium is the main chamber of the heart.
   心房是心脏的主要腔室。
3. 2.The atrium is also known as the ventricle.
   心房也被称为心室。
4. 3.In music, the atrium refers to the range of pitches a musical instrument can produce.
   在音乐中，atrium指的是乐器可以产生的声音范围。