「テニスでラリーが続いて楽しい」＝ "Continuing rallies in tennis is fun"
例文：
Aさん：テニスをしていて何が楽しいか？
What is fun about playing tennis?
Bさん：テニスでラリーが続いて楽しいだと思います！
I think it's fun to have a continuous rally back and forth!
Aさん：何で？
Why?
Bさん：ラリーが続いたら相手が強いですね、そして、私も強くなる！
If the rally continues that means my opponent is good, right? So I will get better, too!
ご参考になれば幸いです。
A rally continues to be fun at tennis because the action is nonstop.
A rally continues to be fun at tennis when the competition is fierce and exciting.
A rally continues to be fun at tennis due to the high level of skill and athleticism.
テニスでラリーが続いて楽しい Rally continues to be fun at tennis
アクションはノンストップなので、ラリーはテニスで楽しみ続けます。
A rally continues to be fun at tennis because the action is nonstop.
競技が激しく、エキサイティングであるとき、ラリーはテニスで楽しみ続けます。
A rally continues to be fun at tennis when the competition is fierce and exciting.
高い技能と運動能力により、ラリーはテニスで楽しみ続けています。
A rally continues to be fun at tennis due to the high level of skill and athleticism.
アメリカ合衆国 
