test chain

例句：

1. 1. The testchain is a crucial part of the testingprocess.
   测试链是测试过程的关键部分。
2. 2. Thetest chain was designed to ensure the accuracyof the results.
   测试链被设计来确保结果的准确性。
3. 3. The test chain was used todetect any errors in the data.
   测试链被用来检测数据中的错误。