1.
Back Boundary line
端线(单打后发球线)
2.
A screened gallery for spectators at the service end of a court-tennis court.
观众席庭院网球球场发球线后的观众席
3.
Place the cue ball on the brown spot and attempt to hit it along the baulk line.
把主球放在棕球置点上，试着使其在被击打后沿着发球线滚动。
4.
The Talking about Pulling Function of Development of Domestic Football Industry after Chinese Football Team Has Rushed out Asia;
谈中国足球出线后对国内足球产业发展的拉动作用
5.
To serve, the player throws the ball straightly up into the air. It must leave the palm of his hand. It must then be hit at the first attempt.
发球时，运动员要把球向上直线抛起，球须脱离手掌，然后球必须一次击出。
6.
The backfield player whose position is behind the line of scrimmage and who usually calls the signals for the plays.
四分卫后场运动员，位置在开球线后面，通常为比赛发号指令
7.
A: Then when you played the second serve again, the linesman ruled that the ball went out of bounds. I could have sworn that I saw it hit the sideline.
然后当你重新再发第二球时，巡边员判球出界了，我可以发誓我看到球打中了边线。
8.
to convert a try
对方球门线后触地得分
9.
Discussion on Economical Effect in the World Cup -On the Stimulating Function of Development of Domestic Football Industry;
对世界杯足球赛经济效应的思考——兼谈中国足球出线后对国内足球产业发展的拉动作用
10.
If you hit it in the centre, not only will the cue ball travel straight along the baulk line to the cushion, but it will also return along the baulk line after hitting the cushion.
如果你能击中球心，主球不但可以沿着发球线径直滚向台岸，还会在撞到台岸后沿着发球线滚回来。
11.
After the first stage burns out, it falls back to earth along a parabolic path, while the engines of the second stage fire to thrust the rocket into an earth orbit.
当第一级烧毁后，沿抛物线的轨道落到地球，而第二级的发动机点火把火箭发射到地球轨道。
12.
To move back from the scrimmage line.Used of a quarterback.
向后退离争球线向后退离争球线。用于美式足球的四分卫
13.
Ace: A legal serve which the receiver fails to touch with the racket.
发球得分（爱司）：合法发球后，接球员无法接到球。
14.
The players stationed behind the line of scrimmage.
后卫防守在并列争球线后面的队员
15.
A serve that one's opponent fails to return.
得分的发球发球后对方未能击回
16.
The Development of Technology of Serving Ball of Volleyball after New Rules Issuing;
新规则实行后排球发球技术发展趋势
17.
line across a billiard table behind which the cue balls are placed at the start of a game.
台球桌上的一条线，开球时主球放在这条线的后面。
18.
It is not taken from the baseline, but from the servere's own service court.
发球时，发球者不是站在球场的底线外，而是站在自己的发球区内。