Make all customers stand in one long, snaking line—called a serpentine line—and serve each person at the front with the next available register.

让所有的顾客排成蜿蜒的长队——又称为蛇形队伍，用下一个可用的收银台为前面的每个人服务。

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Another surprising find: the prefrontal cortex, though at the front of the brain, might actually serve as its central information hub that distributes information throughout the brain.

另一个惊人的发现是：前额叶皮质，虽然在大脑前端，但实际上可能是信息中枢的核心，负责将信息分配到整个大脑。

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Perhaps the most curious anomaly of our current counterterrorism fight, however, is the fact that the subject matter experts who serve at its intellectual front lines have found themselves unexpectedly under attack.

FORBES: The War On Counterterrorism

The yew bushes at the front of my porch, for instance, serve as a winter shelter for chickadees.

WSJ: Giving Birds a Refuge--WSJ Weekend Gardener

Women currently make up more than 14% of the 1.4 million active military personnel but were not allowed to serve in over 230, 000 combat positions, despite that they have increasingly served at the front lines.

FORBES: Will Allowing Women In Combat Roles Revolutionize Military Leadership?