Styles are constantly changing. Fashions come and go. But few have had the popularity or permanence of the T-shirt and tuxedo.

式样在不断地变化，时尚来了又去，但鲜有T恤衫与男晚礼服这样久盛不衰，长得人气。

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And to start with some real examples, a lot of this infant research has gone back to the Piagetian question of object permanence, asking, "Is it really true babies don't know that objects remain even when they're out of sight?"

下面给大家介绍一些实例,许多的婴儿研究都回到了,皮亚杰的客体永存性问题上,去探讨,"婴儿是否真的不知道,物体即使离开视线也仍然是存在的"

耶鲁公开课 - 心理学导论课程节选

Even the buildings somehow don't quite exude the permanence of the old jobs.

BBC: News Online

Some of the new Fed-established lending facilities to deal with the recent credit liquidity crisis may become permanent or left in place until the situation improves, but that "we haven't decided yet" about the Fed's discount window's permanence.

FORBES: Magazine Article