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.
Study on Third Strike of Serving Side to Force the Pace in Men s Double Event of Badminton;
羽毛球男子双打发球方通过第3拍争取主动的研究
4.
Second server!
第二发球员发球!(双打)
5.
First server!
第一发球员发球!(双打)
6.
one hand out
(双打)失去第一次发球权
7.
You served out 0f turn!
你发球顺序错误!(双打)
8.
alternate in serving
①换发球②双打中一方轮流发球
9.
The service courts are slightly different for singles and doubles.
单打和双打的发球区略有不同（见附图）。
10.
left court player
(双打)在左场区接发球的球员
11.
right-court player
(双打)在右场区接发球的球员
12.
hogging the court
(双打)抢打同伴的球
13.
Research on Receiving Technology of Top Men's Doubles Table Tennis Players
世界优秀乒乓球男子双打运动员接发球技术统计研究
14.
You received out of turn!
你接球顺序错误!(双打)
15.
There are two people in singles and four people in doubles or mixed doubles..
乒乓球单打为两人. 双打和混合双打为四人。
16.
There are two people in singles and four people in doubles or mixed doubles。.
乒乓球单打为两人.双打和混合双打为四人。
17.
There are two people in singles or four people in doubles or mixed doubles.
网球比赛单打为两人。双打或混合双打为四人。
18.
Badminton can be played by two people in singles or by four people in doubles or mixed doubles.
羽毛球可以两人单打或四人双打和混合双打。