练习跳绳时，她按照一二三的节奏数着。

While practicing jump rope, she counts in a ___one-two-three rhythm.

学习使用这个软件就像数一二三一样简单。

Learning to use this software is as simple as ___one-two-three.

跟着音乐的节奏数一、二、三，就能跳好这支华尔兹。

Count ___one-two-three to the music's rhythm to dance this waltz well.