sequence control的用法和樣例：
例句
- Program control has been developed greatly.
程序控制技術已經得到了很大的發展。 - Fabrication process control in real time.
同步的製造程序控制。 - The purpose of protothreads is to implement sequential flow of control without using complex state machines or full multi-threading.
它的主要作用是執行順序控制流，而無須複雜的狀態機或者多線程。
