一减一等于零。
苏格兰将提前实现全国碳减排目标。
Scotland will reach the national target in carbon emissions reduction ahead of schedule.
二十减三等于十七。
二十减一等于十九。
九减七等于多少？
八减四等于四。
八减五等于三。
三减一等于二。
十减二等于八。
四减三等于一。
一减一等于零。
三减二是一。
它还允许您对两个统计数据执行诸如加、减、乘、除等数学运算。
It also lets you perform mathematical operations like addition, subtraction, division, and multiplication on two statistics.
原因在于，当碳被标价时，那些实行的减排措施中成本最低的将会先实施。
The reason is that when carbon is priced, those emissions reductions that are least costly to implement will happen first.
在某些情况下，您必须考虑加或减的小时数；在其他情况下，无需进行调整。
In some cases, you must account for the hour added or subtracted; in other cases no adjustment is needed.
随着各国继续设定减排目标，需要采取更有力的措施才能使其周围环境产生显著影响。
As countries continue setting goals of reducing emissions, greater steps need to be taken to have a noticeable effect on the surrounding environment.
原子性使得这两个操作——从储蓄帐户减钱和向支票帐户加钱——被当作单个事务处理。
Atomicity enables the two operations—the subtraction from the savings account and the addition to the checking account—to be treated as a single transaction.
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