noiselessness的翻译，读音

例句

They moved with absolute noiselessness. 他们绝对无声地移动。

The fanless design ensures complete noiselessness and maintenance-free operation. 无风扇设计，无噪音维护便捷。

This method is characterized by noiselessness, non vibration, not polluting surroundings during construction. 具有施工时无噪声，无振动，不污染周围环境等优点。