bidirection chain

例句：

1. 1. The bidirectional chain is a crucial element in the design of our new product.
   双向链是我们新产品设计中至关重要的元素。
2. 2. The bidirectional chain has been shown to be more effective than traditional methods for certain tasks.
   双向链在处理某些任务时比传统方法更有效。
3. 3. The bidirectional chain was used to connect two pieces of equipment together, allowing for smootheroperation.
   双向链被用来连接两台设备，使得操作更加顺畅。