fartlekn.
'fɑ:tlek
中文n. 【田径】法特莱克训练法，(加速跑与慢跑交替进行的)中长跑训练法[亦作 interval training ] \n
词根词源
fartlek (n.)1952, Swedish, from fart "speed" (cognate with Old Norse fara "to go, move;" see fare (v.)) + lek "play" (cognate with Old Norse leika "play;" see lark (v.)).
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