vi.

1. 拍动；摇晃[Q]
   The fish were flopping about in the bottom of the boat.

   那些鱼在船底扑腾着。

2. 扑通落下（或倒下）[Q]
   I flopped down on the couch.

   我噗地倒在长沙发椅上。

3. （作品、演出等）失败
   She flopped as a stage actress.

   作为一名舞台演员她失败了。

vt.

1. 扑通放下；使扑通落下
2. 拍（翅）；翻动

n.

1. 拍击声；扑通掉落（的声音）[S]
   He fell with a flop into the water.

   他扑通一声掉进水里。

2. （作品、演出等的）失败[C]
   Because the acting was dull, the film was a big flop.

   由于演出死板，那部电影彻底砸锅。

   The marketing campaign was a flop. The product didn't sell.

   市场宣传彻底失败，产品卖不出去。

   The play was a flop.

   这出戏是个失败。

ad.

1. 扑通一声地
2. 恰巧

v.

1. fall, hang, or collapse in a heavy, loose, and ungainly way.
2. informal (of a performer or show) fail totally.
3. informal rest or sleep in an improvised place.

n.

1. a heavy, loose, and ungainly fall.
2. informal a total failure.
3. informal, chiefly US a cheap place to sleep.