两个半小时英语是Two and a half hours。例句：That was probably only two and a half hours into the climb（大概发生在最后攀登开始的两个半小时左右）。

Two and a half hours的例句：We have two and a half hours（还有两个半小时）；We drove two and a half hours to get there（我们开了两个半小时到那里）。