Every sixteen to twenty days, the ship stops in a port for three to six days.

每隔16到20天，船会在一个港口停靠3到6天。

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Can you face six or seven 12-hour work days every week?

你能够承受每周六到七天，每天12个小时的工作吗？

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And practiced. Every subject in the task performed 360 trials of the task per day for at least six days.

每天要诵读360遍，并至少坚持练习六天。

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It already has a far-flung network of sorting centers and letter carriers that allows it to deliver physical documents to every U.S. address six days every week.

CNN: Save the Postal Service from collapse

The radiation exposure from a Mars journey is similar to getting a full-body CT scan every five or six days, said lead researcher Cary Zeitlin of the Southwest Research Institute in Boulder, Colo.

NPR: Astronauts Face Radiation Threat On Long Mars Trip

The company typically runs sales for brands for three to five days every four to six weeks.

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