at very fast speed

1. 兩人都干得很快，她們的巧手飛速地運(yùn)動(dòng)著，由于比賽帶來的興奮使她們不感到活兒很累。
   Both work with speed, their skilful hands move rapidly, and the excitement of the contest makes the labor light.
2. 在飛速發(fā)展的領(lǐng)域中，如計(jì)算機(jī)科學(xué)，研究人員遇到困難之一是跟上當(dāng)今的發(fā)展水平。
   One of the difficulties of researchers in a fast-moving area like computer science is keeping abreast of current developments.

飛的英語翻譯：

速的英語翻譯：