枫叶在秋天变成了鲜红的颜色，为丰收的季节增添了另一抹色彩。

The maple trees turn brilliant red in autumn, adding another dimension to the colors in the harvest season.

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通常在果核的颜色上会有一些变化，从绿色向黄色的转变标志着葡萄已开始进入生理成熟期，那时正是丰收的最佳时机。

There's a change in the colour of the pips that marks the onset of physiological ripeness, from green to yellow, which is the critical point at which to harvest.

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