It had that serve of hers beauty, directness, youth,

她的那种发球又美又直接充满青春气息
a classical purity of trajectory and was, despite its spanking pace,

那道诡计正统纯净而且尽管速度飞快
fairly easy to return,

却很容易打回去
having as it did no twist or sting to its long, elegant hop."

因为它在漂亮的长距离的飞行途中没有旋转也没有冲刺
And then a little further down the page:

这一页下面一点的地方
"She who was so cruel and crafty in everyday life

她在日常生活中那么凶狠那么狡猾
revealed an innocence of frankness,

在比赛时却显出一副天真坦率的样子一种心慈手软的击球
a kindness of ball playing that permitted a second-rate but determined player,

令一个二流的但一直坚定的球员
no matter how uncouth and

不论动作多么笨拙
incompetent, to poke and cut his way to victory."

不标准的动作都无法阻挡她的成功
That pose--the pose of tennis service, the raised foot--

这里的动作发球时提起一条腿的动作
it's the same pose she uses to seduce him in that scene I just read

和她引诱他时的动作是一样的