tracking symbol的用法和样例：
例句
- The visual environment for symbol designing ensures expansibility of the interoperable symbol library.
可视化的符号设计环境保证了互操作符号库的可扩展性。 - That rock was a symbol of Him who by His death would cause living streams of salvation to flow to all who are athirst.
磐石就是基督的表号，象征著他的死，必使救恩的活水流给一切口渴的人。
