tò-pha-siû倒拋泅

backstroke

backstroke (a swimming stroke swum on one's back)

English Wiktionary, “倒拋泅” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E5%80%92%E6%8B%8B%E6%B3%85 · confidence: Medium (Wiktionary)