The tour will take about an hour and a half. We ought to be back here by 3:00.
參觀大概要一個(gè)半小時(shí),3點(diǎn)鐘以前回到這里。
As they are expected to be hungry after their long journey, food is laid out for them.
因?yàn)轭A(yù)料到他們?cè)诮?jīng)過長(zhǎng)途旅行之后會(huì)感到饑餓,所以為他們擺放好了食品。