### Chinese: 使用混凝土模块筑建检查井的优势在于模块的上下左右四周均为凹凸槽结构，组合砌筑形成链锁。
### English: The advantage of using concrete modules for building inspection wells is that the modules have concave-convex grooves on <v>both sides</v>, and the combined masonry is connected to form chainlocks.
### Errors: There is a major accuracy/mistranslation error at "both sides" within <v></v>.

### Improved English: The advantage of building inspection shafts using concrete modules is that the four sides of the modules are of concave groove structures, which are built to form chain locks.
