at a speed close to that of light
光速に近い速度で
at a stately pace
ゆったりとしたペースで
at a stone's throw
石を投げて届く［わずかな］距離
at [in] a stride
一またぎで
at a [one] stroke
一撃で；一挙に
at [on] a subconscious level
潜在意識レベルで
at a swift pace
速い歩調で
at a temperature of 60°C
摂氏６０度で
at a tender age
幼いころに
at a terrific [rare] bat
猛スピードで
