n. a swimming kick used while treading water
v. give a thrashing to; beat hard
v. beat so fast that (the heart's) output starts dropping until (it) does not manage to pump out blood at all
v. move data into and out of core rather than performing useful computation
vt. 打, 使逆行, 胜过, 推敲, 鞭打
vi. 打谷, 痛打, 剧烈扭动, 逆行
n. 打谷, (划水)鞭状动作