Usea stick to check the depth and firmness of the ground in front of you.

找根棍子来试试水深，和面前地面的硬度。

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Usea ladder to reach things high up. See that the ladder is firmly placed, andwhile on a ladder, don't reach too high or too far to one side.

如果要使用梯子拿高处的物品，注意梯子要平稳的放在平整的地面上，站在梯子上不要去拿太高或太远的地方。

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