正确选择能补充体能消耗的零食，关键在于了解特定食物是如何供给身体所需能量的。
The key to choosing a satisfying snack that will give you energy to burn is understanding how certain foods fuel energy.
这额外的补充来自于添加的大约100台小型天然气轮机和更多的水力发电，同时，许多公司的电能由自己供给。
The extra capacity comes from an additional 100 or so small natural-gas turbines; firms generating their own power; and more hydroelectricity.
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