1.
N: There are three basic kinds of services: the understand serve, the overhand serve, and the hook serve or roundhouse serve.
基本上有三种：下手发球、手发球和钩手发球或抡臂钩手发球。
2.
There are three basic kinds of the underhand serve, the overhand serve, and the hook serve or roundhouse serve.
有三种基本的发球方法:下手发球，上手发球和钩手发球或大力(臂)钩手发球。
3.
There are three basic kinds of service:the underhand serve, the overhand serve, and the hook serve or roundhouse serve.
有三种基本的发球方法：下手发球，上手发球和钩手发球或大力钩手发球。
4.
Services include the backhand topspin and backspin serves, the forehand topspin and backspin serves, and the high toss service.
发球方法包括，反手上旋球和下旋球，正手上旋球和下旋球。和高抛发球。
5.
Ronald seems to know all kinds of serve techniques-the backhand topspin and backspin serves, the forehand topspin and backspin serves, and the high toss serves.
所有的发球技巧，罗纳德似乎都懂-----反手上旋球和下旋球、手上旋球和下旋球以及高抛球。
6.
roundhouse serve
大力钩手发球，抡臂发球
7.
Serve again! The cannon-ball service.
再发球!勾手大力发球。
8.
The shaft of the server's racket at the instant of hitting the shuttle shall be pointing in a downward direction to such an extent that the whole head of the racket is discernible below the whole of the server's hand holding the racket.
发球员球拍击到球的瞬间,球柄应朝下,整个拍框应明显低于发球员握拍的手。
9.
To cut or slice(a ball)with an underarm stroke, as in tennis.
削球，切球在网球中用下旋手法击（球）
10.
An overhand throw, stroke, or delivery.
高手扔球、划水或发球
11.
But in softball, the pitcher must throw the ball underhanded.
但垒球的投手必须使用下手投球。
12.
For beginners, I recommend the underhand serve. For experienced players I recommend the overhand floater serve.
对初学者来说，我建议发下手球，对有一定训练经验的我建议发上手飘球。
13.
The pitcher let go a fast ball and the batter swung and missed.
投球手投出一个快球，击球手晃了一下，没有接到。
14.
Overhand serves may be played in differents ways, such as the overhand floater serve, the overhand spin serve and the power serve.
上手发球有不同的方法，例如上手飘球、上手旋转球和大力发球等。
15.
Overhand serves may be played in different ways, such as the overhand floater serve; the overhand spin serve; and the power serve.
上手发球有不同的方法，例如上手飘球；上手旋转球和大力发球等。
16.
N: Overhand serves may be played in differents ways, such as the overhand floater serve, the overhand spin serve and the power serve.
上手发球有不同的方法，例如上手飘球、手旋转球和大力发球等。
17.
strike (the ball) in golf, tennis, or hockey obliquely downward so as to give a backspin or elevation to the shot.
在打高尔夫球、网球、曲棍球时用下旋手法击球。
18.
It's easy to use a forhand serve.
用正手拍发球很容易