1.
Study on Service Placement of the Elite Tennis Double Male Athletes
优秀男子网球运动员双打发球落点的研究
2.
An Analysis of the Service Ball Landing Point and Stability in Badminton Doubles;
关于羽毛球双打发球落点变化及稳定性的技术分析
3.
Change of Service Placement of Malin at Team Match of the 47th Table Tennis World Champions;
第47届世界乒乓球锦标赛团体赛马林发球落点变化的分析
4.
Tactics Applies of Excellent World Woman Tennis Athlete Service Placement Skill to Competition Results Relevance
世界优秀女子网球运动员发球落点与技术相关表现研究
5.
They include serving, returning the ball and placing it.
基本技术有: 发球，回击球和控制球的落点。
6.
The ball must then hit any part of the table on the server's side, bounce over the net and hit any part of the table on the receiver's side.
之后球须落在发球一方的台面的任何一点上，弹起越过横网，并落在接球一方台面的任何一点上。
7.
If a service is not good, it is called a "fault", which includes that the ball does not cross the net, or it does not first hit the ground in the correct service court and so on.
如果发球不好，就是"坏球"。例如，发球不过网或球的第一落点不在应该击中的接发球区内等等。
8.
The Experimental Development on Design and Study in Basic Physics--“Located point falling”;
基础物理设计、研究型实验开发——“定点落球”
9.
If the ball doesn't cross the net, or it doesn't first hit the ground in the correct service court, it is a faulty service.
如果发球不过网或球的第一落点不在应该击中的接发球区，就算是发球失误。
10.
Yes, but you must drop the ball keeping the point where the ball lay directly between the hole and the spot on which the ball is dropped.
是的。但必须是在球的落点与该球洞的连线上，在球落点的后面抛球。
11.
A net ball is when the ball hits the net,but doesn't go over it.
落网球就是发球时球触网而没过网。
12.
A serve or return that falls out of bounds in a court game.
界外球网球比赛中落入球场外的发球或回球
13.
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。
14.
A common fault is a net-ball,or net-fault.
常犯的失误是发落网球，或发球失误。
15.
The not-ball or net-fault, is a common fault.
发落网球或发球失误是种常见的失误。
16.
The Research on Passing and Falling - points in the Attaddng Tactics of Corner Kick in Modern Soccer;
现代足球角球进攻战术中传球及落点的研究
17.
The server begins in the right service court and serves to his opponent it the opposite right service court.
发球员从右边发球区开球，而且发生的球要(落在)对方右发球区里。
18.
The ball shouldn't hit my half of the court when I serve.
当我发球时球，球不应先落在我这半边球场。