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1·It is certain that you will think the red one is heavier.

当然你会认为红色的更重。

2·It is certain that Mr. Black will support your plan.

确定无疑的是，布莱克先生会支持你的计划。

3·It is certain that the Census procedures, which lump the online sales of major traditional retailers like Walmart with non-store retailers.

可以肯定的是，人口普查程序将沃尔玛等主要传统零售商的在线销售与“非商店零售商”混为一谈。

4·It will never be known how and when this numeration ability developed, but it is certain that numeration was well developed by the time humans had formed even semi-permanent settlements.

我们永远也不会知道这种计算能力是何时、如何发展起来的，但可以肯定的是，在人类形成半永久定居点的时候，这种计数法已经发展得很好了。

5·It is certain that this monastery which had a grand air both as a church and as a seignory.

可以肯定的是，这座修道院既有教堂的气派，也有修道院的气派。

6·It is certain that he is honest.

他是个诚实的人是确定无疑的。

7·It is certain that he will agree with us.

他会同意我们的意见，这是肯定的。

8·It is certain that two and two make four.

二加二等于四是确信无疑的。

9·It is certain that communication skill is necessary on job.

沟通技能在工作上肯定也是必须的。

10·It is certain that environment influence learning efficiency.

可以肯定的是，环境影响学习效率。