Instead of lingering at the intersection flailing your hand in the air , you fish out your smartphone .

现在不用徘徊十字路口招手了，只要掏出智能手机，轻触几下，租车公司Uber简洁而具有未来主义风格的公司标识就会跳出来。

One flailing arm caught him across the cheek .

一只挥舞着的手臂打到了他的面颊上。

He was running along , his arms flailing wildly .

他向前跑，拼命摆动双臂。

I could hear their slow , shuffling movements , and I could almost imagine their arms flailing , searching for their elusive last meal .

我能听到他们的慢，洗牌动作，我几乎能想象他们挥动双臂，为他们寻找难以捉摸的最后一餐。

But despite their relative success they have watched citi 's stock price flounder since 2001 , dragged down by its flailing retail side .

尽管他们取得了相对的成功，但是，自从2001年以来，花旗银行的股票就因为零售业务的拖累一直处于挣扎状态。