Yes, I know it's hard to be a professional investor and to keep your eyes on the ball.

的确，我知道成为专业投资者并始终专注于股市行情是非常困难的。

youdao

As soon as you see the shot is an overhead, get your left hand up and point at the ball until you hit it. Doing this helps you keep your eyes on the ball.

当你判断出需要打高压时，上举你的左手指向来球直到拍面击中它，这样做有助于你眼盯球。

youdao

First, narrow your focus. Between points, keep your eyes on your strings, the ball, your feet or anything neutral nearby.

首先，你需要更高的专注力，每两分之间，不要让你的视线离开你的拍线，网球，你的脚以及你身边一些中立的事物。

youdao