按月交替执行公务的制度。确立于幕府体制完善之后的1635年（宽永12年），其规定老中以下（包括老中）官员按月轮番办公。
大蒜的价格就是其中之一：批发价格自3月份以来几乎翻了两番。
The cost of garlic is among them: wholesale prices have almost quadrupled since March.
在1915年的10月，爱因斯坦投身于长达一个月的疯狂工作中。在此期间，他回顾了早先的一个数学策略，并且与方程式、证明法、修正法、数据更新等展开了一番搏斗。
In October 1915, Einstein threw himself into a month-long frantic endeavor in which he returned to an earlier mathematical strategy and wrestled with equations, proofs, corrections and updates.
比如像他之前的摩尔，就看到了每18个月翻一番的增长速度，就像所有人都看到的那样将继续下去。
Like Moore before him, he could see that the 18-month doublings in performance would continue to stretch out as far as anyone could see.
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