Aged people yawn less than younger ones, mainly during morning and midafternoon.
主要在早上和中午, 老人比年轻人打的呵欠少。

The visitor who talked to the Guardian turned up midafternoon and waited 45 minutes before giving up on an attempt to see it.
和卫报记者交谈的参观者, 从中午开始等了45分钟后放弃。

In the following days, we began to chat during the midafternoon lull.
在接下来的几天里，每当下午三点左右生意清淡时，我们就开始闲聊。

We can no longer meet these challenges by closing the door andafter our own house.
我们已经不能以关起门来独善其身得方式应对这些挑战。

The siege was finally liftedafter six months.
六个月后围攻最终解除了。