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小房 --勾手发球套路：好的发球在于逼真的假动作，隐蔽性和突然性，使对方接不出质量，而不是球发得有多旋转。多套多种的勾手的配合，左右两点加奔球。
总结的挺好
小房--勾手发球套路：好的发球在于逼真的假动作，隐蔽性和突然性，而不是有多旋转。
Translate
Basically he's saying that there are three variations of the hook serve, so he'd change it mid match to confuse the opponent. He also says that the mark of a good serve is not the amount of spin but the deception in the movement
use gpt
小房 --勾手发球套路：好的发球在于逼真的假动作，隐蔽性和突然性，使对方接不出质量，而不是球发得有多旋转。多套多种的勾手的配合，左右两点加奔球。
总结的挺好
小房--勾手发球套路：好的发球在于逼真的假动作，隐蔽性和突然性，而不是有多旋转。
Translate
Basically he's saying that there are three variations of the hook serve, so he'd change it mid match to confuse the opponent. He also says that the mark of a good serve is not the amount of spin but the deception in the movement
use gpt