The contractor said the plaster in the lobby needs two days to dry completely.

承包商說大廳的灰泥需要兩天才能完全乾透。

Please email maintenance about the cracked plaster near the conference room window.

請寄電子郵件給維修部門，告知會議室窗戶旁的灰泥有裂痕。

Our hotel room had fresh plaster on the ceiling, so the staff offered an upgrade.

我們的飯店房間天花板剛抹上新灰泥，所以員工提供了升等。