A new format would alienate its ageing readership without attracting young readers.新的版式会疏远上了年纪的读者群，并且也不会吸引年轻读者。The leaflet is in PDF format.宣传折页是PDF格式的。They switched from set speeches to a question - and - answer format....
We change our behaviour by observing the behaviour of those around us.我们通过观察周围人的举止改变自己的行为。The army was observing a ceasefire.军队正遵守停火协议。He'd been observing her the whole trip.他整个旅途中都在观察她....