放松和快
Relax and fast
以上为机器翻译结果，长、整句建议使用 人工翻译 。
优秀短跑运动员可以在跑得尽量快和保持放松和流畅之间找到平衡。
The best sprinters find that balance between pushing as hard as possible while staying relaxed and fluid.
youdao
尽管艰难，当困难来临时，我可以做到跑得放松和跑得快。
Expect it to be tough, and when it does I can stay running relaxed and fast.
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