thrash

• 指游泳时在原地打腿的动作，通常指自由泳、仰泳等项目中快速上下摆动双腿的打水动作，也可泛指剧烈、杂乱地摆动或拍打。

A noun referring to a specific swimming kick used while treading water, often involving vigorous or flailing leg movements.

1. B2informal

   A specific type of swimming kick used while treading water, often involving a rapid, alternating leg movement.

   打腿

   • He used a thrash to keep his head above water.
   • The lifeguard demonstrated the thrash for treading water.
   • She practiced the thrash to improve her water treading technique.

   同义词flutter kick

• 表示反复击打、抽打的动词；也指剧烈、混乱地移动或猛冲。

A verb used to indicate the act of beating or striking repeatedly, or moving wildly and violently.

1. Beat or hit hardB2informal

   To strike someone or something repeatedly and violently.

   痛打

   • The farmer thrashed the donkey for straying into the field.
   • He threatened to thrash the thief if he caught him again.
   • The waves thrashed against the rocky shore.

   同义词batterbeatclobberdrubfloglashpoundpummelwallopwhip

2. Move violentlyB2formal

   To move or twist about in a wild, uncontrolled manner.

   剧烈扭动

   • The fish thrashed wildly in the net.
   • She thrashed around in her sleep, having a nightmare.
   • The injured animal thrashed on the ground in pain.

   同义词flailsquirmstrugglethreshtosstwistwigglewrithe

   反义词calmreststill

3. Dance the slam danceC1slang

   To dance in an aggressive, energetic style typical of punk or heavy metal concerts.

   跳冲撞舞

   • The crowd started to thrash as the band played their first song.
   • He loves to thrash at punk rock shows.
   • They were thrashing in the mosh pit all night.

   同义词moshslamslam dance

4. Heart conditionC2formal

   To beat so fast that the heart's output drops, failing to pump blood effectively.

   心悸

   • The patient's heart began to thrash due to the arrhythmia.
   • During the attack, his heart thrashed uncontrollably.
   • Doctors monitored the heart as it started to thrash.

5. Computer thrashingC2formal

   To move data into and out of core memory excessively, slowing down or halting useful computation.

   内存抖动

   • The system started to thrash when too many programs were running.
   • Thrashing occurs when the computer runs out of RAM.
   • The server thrashed under the heavy load.

6. Thresh grainB2formal

   To beat the seeds out of a grain plant, such as wheat or barley.

   打谷

   • Farmers used to thrash wheat by hand with a flail.
   • The machine thrashes the grain quickly and efficiently.
   • They thrashed the barley to separate the seeds from the stalks.

   同义词beatflailthresh

7. Defeat thoroughlyB2informal

   To beat someone decisively in a competition or fight.

   彻底击败

   • Our team thrashed the opponents 5-0 in the final match.
   • He thrashed his rival in the boxing ring.
   • The champion thrashed all challengers easily.

   同义词clobbercrushdrubhammeroverwhelmpasteroutslaughtertrouncewallop

   反义词losesubmitsurrenderyield

短语动词变体thrash out