at speed的用法和樣例：
例句
- The taxi sped off at full speed.
那輛計程車飛快地開走了。 - He was typing with speed and efficiency.
他在飛快地打字，工作效率很高。
辭彙搭配
- at top speed 全速，以最快速度...
- at breakneck speed 以極危險的高速度...
- at full speed 全速
- at the top of one's speed 以最高的速度...
- at lightning speed 閃電似地(風弛電掣地...
