步骤是可数名词吗

　　I hopped down three steps.

　　我单脚跳下3级台阶。

　　She walked on a few steps.

　　她继续走了几步。

　　She walked daintily down the steps.

　　她优雅轻盈地走下台阶。

　　She climbed up the flight of steps.

　　她爬上了那段台阶。

　　The stone steps were worn and broken.

　　这些石头台阶被磨平破裂了。