swallow dive
noun [ C ] UK uk/ˈswɒl.əʊ ˌdaɪv/ us/ˈswɑː.loʊ ˌdaɪv/ (US swan dive)
燕式跳水;（直体）向前跳水
a dive into water in which you hold your arms out from your sides until you are close to the water
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