他们开始时以慢速练习，每两周增加一次时间和强度。
They started out slower, adding duration and intensity every two weeks.
他让我们花一两周时间反思在我们生活中最起作用的技巧，然后确保我们向孩子们介绍这些技巧，并给他们机会练习。
He asked us to take a week or two to reflect on the skills that have served us best in life, and then make sure we are introducing children to those skills and giving them a chance to exercise them.
但是现在我已经在两周的时间内进行了八次击球练习。
但是现在我已经在两周的时间内进行了八次击球练习。
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