0 to walk around slowly in a relaxed way or without any clear purpose or direction -- 漫步;閒逛;遊蕩
1 to start talking about a different subject from the one you were originally discussing -- 離題
Don't worry if you lose hold of the reins - the horse won't wander off.
We wandered along the shore, stepping over the flotsam that had washed up in the night.
We wandered through the beautifully proportioned rooms of the Winter Palace.