left half back 左前卫
right half back 右前卫
half back belt 半腰带 ; 后半腰带
centre half-back 中前卫 ; 中半后卫
center half back 中卫 ; 中坚
half back lining 后身半衬里
Right half-back 右前卫
N-COUNT In American football, a halfback is an attacking player who stands behind the front line and runs with the ball. 中卫
Berwanger was a halfback for the University of Chicago Maroons.
柏华格是芝加哥大学红翼队的中卫。
You say: "About a year and a half back, I booked a last-minute flight to a business meeting."
你说:“大约一年半以前,我预定了飞往一个商务会议的紧急航班。”
Passengers will pay two hundred thousand dollars to ride to outer space and back for two and a half hours.
VOA: special.2009.12.18
And by the time I'm a million and a half, I no longer remember what was happening in oh, back, back.
等我活到150万年,我不记得,很久以前做过什么。
So, sometimes people get confused when they're solving problems and call the amplitude this distance all the way from the max to the min but it's only half of that because we're only going back to the average level.
解题的时候会弄错,把这个从,最大值到最小值的距离,叫做幅值,但实际上,只有它的一半,只是它和平均值的差距。
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