And still with unit lengths. You often think of these as the rotation matrices.

还是单位长度 你通常认为这些是旋转矩阵。

You might be tempted to just translate the columns of our rotation matrix into jennifer's language, but that's not quite right.

你可能会想把旋转矩阵的列转换成jennifer的语言 但这并不完全正确。