他们需要的是锻炼：因此公园里设计了21个足球场和12个篮球场，还有一些让人走的筋疲力尽的小道。
What they need is exercise: hence the park's proposed 21 football fields and 12 baseball fields, together with some exhausting-looking walks.
最让人满意的是，有几个球员这是本赛季第一次登场，因为他们需要一些比赛来锻炼。事实上他们做的很好，这对于我们也更有好处。
What makes it particularly satisfying is that there were a number of players out there who were starting a game for the first time this season, because they needed to get a game under their belts.
研究小组简单地总结一下他们的发现,“大脑就像一块肌肉，我们需要锻炼它。”
The research team summarizes its findings by stating simply, “The brain is like a muscle. We need to exercise it.
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