Jane :
I've been watching your swing. It's really improving.

我一直在观察你的挥杆动作,真的进步不少。
Tom:
I'm still not consistent, though.

不过我还是配合得不是很好。
Jane :
You're almost there. Just remember to extend your arms and keep your head down.

就快成功了,只要记住把两臂伸直,头向下。