asynchronous bus

例句：

1. 1. The communication between the two countries is asynchronous.
   两国之间的通信是非同步的。
2. 2. The system is designed to be asynchronous for better performance.
   该系统被设计为异步运行，以获得更好的性能。
3. 3. The data transfer is asynchronous, meaning it doesn't require synchronization.
   数据传输是异步的，这意味着它不需要同步。