JCL

例句：

1. 1. JCL is a popular online platform for learning Chinese.
   JCL是一个受欢迎的在线学习汉语平台。
2. 2. The company's headquarters are located in JCL, Shanghai.
   该公司总部位于上海的JCL。
3. 3. We will be meeting at JCL to discuss the project plan.
   我们将在JCL会面讨论项目计划。