ac·ce·le·ran·do /(ˌ)ɑˌʧɛləˈrɑn(ˌ)do; ɪkˌsɛ, (ˌ)æk-/
(v.)逐漸加快
Ac·cel·er·an·do a. Mus. Gradually accelerating the movement.
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accelerando
adj : gradually increasing in tempo
n : a gradually increasing tempo of music; "my ear will not
accept such violent accelerandos"
adv : with increasing speed; "here you must play accelerando"