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。