low-pitched

1. ADJ A sound that is low-pitched is deep. (声音)低沉的

With a low-pitched rumbling noise, the propeller began to rotate. 随着低沉的隆隆声，螺旋桨开始旋转起来。

2. ADJ A voice that is low-pitched is very soft and quiet. (嗓音)低柔的; 轻细的

He kept his voice low-pitched in case someone was listening. 他压低声音，免得旁人听见。