footroom

名词 n.
中文释义

英文释义

名词 n.
  1. Space for a person's feet, especially while seated. uncountable
    — Drivers say there's insufficient footroom; the brake and accelerator pedals are mounted too close to each other; narrow, poorly cushioned seats lack sufficient thigh support; […]
  2. Extra bandwidth for lower-than-expected values. uncountable
    — […] the difference between signal-to-noise ratio and overload reserve (headroom) as well as noise (safety) margin (footroom).

词源

From foot + room.
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