倍投进一退二投注法简介：He sat there alone in a daze, and no one bothered him. Class after class took turns, teachers came and went, and the occasional comments from his classmates woke him up, and he realized that school had been out for a long time.
He sat there alone in a daze, and no one bothered him. Class after class took turns, teachers came and went, and the occasional comments from his classmates woke him up, and he realized that school had been out for a long time.
