他们封闭了道路进行施工。

Tāmen fēngbì le dàolù jìnxíng shīgōng.

They closed the road for construction.

会议室的门被封闭，无法进入。

Huìyìshì de mén bèi fēngbì, wúfǎ jìnrù.

The door to the conference room is closed and cannot be entered.

因为维修，这条道路将封闭三天。

Yīnwèi wéixiū, zhè tiáo dàolù jiāng fēngbì sān tiān.

Because of maintenance, this road will be closed for three days.