n.不倒翁；杂技演员；平底无脚酒杯；锁的制动栓
Why could the tumbler not fall down? 不倒翁为什么不倒？
He was a tumbler when he was young. 他年轻时是杂技演员。
A dozen of plates were on the head of the tumbler unsteadily! 杂技演员头上晃晃悠悠地顶着一叠瓷碟。
Whisky is usually drunk in a tumbler. 威士忌通常是装在平底无颈酒杯里喝的。
She ordered a tumbler of orange juice. 她点了一大杯橘子汁。
