问题是在于胰岛素- 这种激素的作用就像一种把糖从血液中取出然后放入肌肉细胞内的关键元素，它可以驱动你的动作。

The problemis the insulin - this hormone that acts like a key to get the sugar out of theblood into the muscle cells, where it can power your movements.

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普通草中的能量大都被锁定为纤维素，而这种新植株在细胞内产生更多的糖。

Much of the energy in ordinary grass is locked away as cellulose, but the new strains make more sugar within the cells.

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锁内的口香糖使得前门难以打开，同样地，肌肉细胞内的脂肪颗粒干扰胰岛素为葡萄糖打开细胞的努力。

In the same way that chewing gum in a lock makes it hard to open your front door, fat particles inside muscle cells interfere with insulin's efforts to open the cell to glucose.

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