Teeter
01
跷跷板, 平衡板
a plaything consisting of a board balanced on a fulcrum; the board is ridden up and down by children at either end
to teeter
01
蹒跚, 摇晃
to stand or move in an unsteady or unstable manner, as if about to lose balance or topple over
例子
The chair teetered for a moment before he fell off.
椅子在他摔倒前摇晃了一会儿。
