例句：
He had given up attending lectures out of sheer boredom.
他已经不再去听讲座了，纯粹出于厌倦。
Where people were concerned, his threshold of boredom was low.
涉及人的事情，他便极易感到厌烦。
Television helps to relieve the boredom of the long winter evenings.
电视有助于打发漫长无聊的冬夜。
Out of sheer boredom I would pick up a book and read on and on.
在百无聊赖中，随手抓过一本书来，读下去。