The mark phase is responsible for tracing through all objects visible to the application and marking them as live to prevent them from having their storage reclaimed.
标记阶段负责跟踪应用程序可见的所有对象并将它们标记为活的，以免回收它们的存储。
2
Lastly, genetical research, such as individual identifying mark and tracing study after sending back, is also foreseeable.