range of a signal

例句：

1. 1. The range of the stars isvast.
   星星的运行范围非常广阔。
2. 2. Theteam's performance varied greatly across therange of games.
   团队在比赛中的表现有很大的波动。
3. 3. The scientist conducted a range of experimentsto test his hypothesis.
   科学家进行了一系列的实验来测试他的假设。