All you do to solve a maze using this algorithm is keep your left hand on the left wall (or your right hand on the right wall) and just follow it along until you exit the maze.

在用这种算法解迷宫时，只需要把左手一直放在左边的墙上(或者把右手一直放在右边的墙上)，然后沿着墙走，直到走出迷宫。

youdao

He held both these arms with one hand, and groped along the wall with the other.

他用一只手抓住这双手臂，另一只手摸索着墙。

youdao

If your foot feels tense, stand with one hand on a wall for support and place the arch of one foot on top of the ball.

如果你的脚很紧张，一只手倒站在墙面支撑着把一只脚放在球上形成一个拱门。

youdao

When I touched my hand against the Western Wall and placed my prayer between its ancient stones, I thought of all the centuries that the children of Israel had longed to return to their ancient homeland.

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"When you have people saying thank you (by coming) to your home to swing a hammer and paint a wall, it says something different than shaking your hand and buying you a drink, " said Gallina, 34.

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Charlotte Faurie and Michel Raymond at the University of Montpellier, France, deduced the prehistoric cave painters' handedness by spraying paint against cave walls to see which hand they pressed against the wall, and therefore did not use for drawing.

BBC: Cave handprint, Montpellier University