gāojià qiáo xià zhuāngzhe yī gè báisè zàoshēng jiāncè xiāng, xiāng mén shàng tiēzhe shèbèi biānhào

高架桥下装着一个白色噪声监测箱，箱门上贴着设备编号。

A white noise monitoring box was installed under the viaduct, with the equipment number affixed to its door.