be surprised at doing的意思|示意

Once you start doing this type of analysis, you'll be surprised at the number of times you have more instances than you expected.

一旦开始进行此类分析，您就会对实例数目大大超过期望数目这一常见情形感到惊讶。

When you're finished with your workout (and you'll be surprised at how quickly you get out of the gym doing this), your muscles have been taxed in a brand new way and need to be stretched.

当你的训练结束了(你会很惊讶做这个训练这么快就完成了)，你的肌肉会有全新的疲劳负担感，需要进行伸展了。