boxer
n
1 person who boxes, esp as a sport 拳击者; (尤指)拳击运动员
a heavyweight boxer 重量级拳击手.
2 breed of dog like a bulldog but with longer legs 拳师犬(似斗牛狗而腿稍长). `boxer shorts man's loose-fitting underpants (男用宽松的)内裤衩.
it requires 97 per cent less energy to travel the quarter of a million miles from the Moon to Earth-orbit than the 200 mile-journey from Earth's surface into orbit!