complex thread class

例句：

1. 1. The engineer used a complex thread class to create the intricate design.
   工程师使用一种复杂的线类来创造这个复杂的设计。
2. 2.The team worked on developing a complex thread class for their software application.
   团队致力于开发他们的软件应用程序的复杂线类。
3. 3.The researcher proposed a new complex thread class that could improve efficiency in data processing.
   研究员提出了一种新的复杂线类，可以提高数据处理的效率。