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您nín可以kěyǐ在zài三sān天tiān内nèi完成wánchéng吗ma？

Can you finish this in three days?

我们wǒmen估计gūjì能néng在zài两liǎng周zhōu内nèi到dào那个nàge地方dìfang。

We calculated that we could reach the place within two weeks.

距离jùlí村cūn内nèi的de邮政局yóuzhèngjú不到bùdào一yī公里gōnglǐ。

It was less than one kilometer to the village post office.

这zhè本běn书shū很hěn难nán在zài一周yīzhōu内nèi读dú完wán。

This book is really difficult to finish reading in a week.