When autumn comes, days get shorter.

秋天来临的时候，白天变短了。

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In the north of China, leaves usually fall down when autumn comes.

在中国的北方，树叶通常在秋天到来时飘落。

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When autumn comes, the maple leaves put on their new red clothes.

秋天来时，枫叶穿上红色的新衣。

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Reince Priebus, chairman of the Republican National Committee, said that Mr Obama's failure to campaign in the recall election will harm his base in Wisconsin when autumn comes.

ECONOMIST: Wisconsin��s recall election: The jet-propelled Republican | The

That day comes at the end of autumn when the sap has sunk back into the ground.

BBC: Stradivarius trees: Searching for perfect musical wood

As executives at auto makers expect the current strong appetite for the subsidies to use up the budget before autumn, car companies are bracing for a sales drop when the program comes to an end.

WSJ: Japanese Auto Sales Climb 92%