sync carrier

例句：

1. 1. The new sync carrier is designed to improve data transfer speed.
   这款新的同步传输载体旨在提高数据传输速度。
2. 2. The sync carrier was used to transmit audio and video signals over a long distance.
   同步传输载体被用来在长距离内传输音频和视频信号。
3. 3. The sync carrier was responsible for maintaining the integrity of the communication system.
   同步传输载体负责维护通信系统的完整性。