gōng / sī / jué / dìng / zài / shè / jiāo / méi / tǐ / shàng / guǎng / ér / gào / zhī / zhè / xiàng / xīn / fú / wù

公司决定在社交媒体上广而告之这项新服务。

The company decided to publicize this new service widely on social media.