The only time that the eyes or head would not lead the action would be when an external force is driving the character’s movements, as opposed to his thought process.

除了当一个外力驾驭角色的运动阻止他的思考进程时，眼睛和头部的时间将不再引领动作。

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Now scientists have for the first time reversed the process of cell division, a breakthrough that could eventually lead to treatments for cancer and other disorders.

美国俄克拉荷马州医学研究基金会的科学家们第一次成功地将细胞分裂的过程加以逆转，这一医学技术上的突破可能会最终使人类获得治愈癌症及其它多种疾病的有效办法。

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Task_tick: This function is mostly called from time tick functions; it might lead to process switch.

task_tick：该函数通常调用自time tick函数；它可能引起进程切换。

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Most of the time, though, tax liens are steps in the tax collection process and eventually lead to payment.

FORBES: Tax Man Chases Dread Pirate Roberts (like a Rodent of Unusual Size)