tailspin

剑桥词典

[ 可数名词：有复数形式的名词 通常作为单数使用的名词 ]
a situation in which a plane turns round and round as it falls quickly towards the ground
（飞机的）尾旋，尾螺旋
[ 单数名词 ]
a situation in which something starts to fail or lose value and gets more and more out of control
失控状态，混乱
Share prices went into a tailspin when the CEO resigned . 首席执行官辞职后股价直线下跌。 返回 tailspin