flapping

拍打；摆动；振翅。

An instance where one, or something, flaps.

音系过程:在英语许多方言(尤指美国英语和加拿大英语)中,非重读音节前的元音间/t/和/d/变为齿龈闪音[ɾ],使metal和medal等词读音相似或相同。

A phonological process found in many dialects of English, especially American English and Canadian English, by which intervocalic /t/ and /d/ surface as the alveolar flap [ɾ] before an unstressed syllable, so that words such as "metal" and "medal" are pronounced similarly or identically.

资源、网络目的地等被快速交替地通告为可用和不可用(或经不同路由可用)的情况。

The situation where a resource, a network destination, etc., is advertised as being available and then unavailable (or available by different routes) in rapid succession.

未经许可的马匹或灵缇赛跑。

The unlicensed racing of horses or greyhounds.