答案1
您可以添加空格或者在两侧\text
添加\quad
s 或s,具体取决于您想要多少空间。\qquad
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{gather*}
I = (0, 0, x_3) \text{ or } I = (0, x_2, 0) \\
I = (0, 0, x_3) \quad\text{or}\quad I = (0, x_2, 0) \\
I = (0, 0, x_3) \qquad\text{or}\qquad I = (0, x_2, 0)
\end{gather*}
\end{document}