walking with difficulty in a way that looks as if you are about to fall

One picture was of a tottering 89-year-old leaving the platform after her conference speech. 有一张照片是一位步履蹒跚的89岁老人在大会发言后离开讲台。

She walked slowly with tottering steps. 她踉踉跄跄地慢慢走着。

shaking and moving from side to side, and likely to fall

It is now so easy to buy books over the internet that the average home is bursting with tottering piles of paperbacks. 现在通过互联网购买书籍非常容易，所以每个人的家里都摆满了成堆的平装书。

They lived in tottering shacks made from mud, bricks and breeze blocks. 他们住在用泥巴、砖块和焦渣石糊成的残破棚屋里。

becoming weaker, and likely to fail or end

It was the last decision of a tottering government. 这是一个摇摇欲坠的政府的最后决定。