The self-erasure happens because the new isomer of azobenzene is not as stable as the old one.

自动清洁现象的发生是由于偶氮苯得异构体远不如其本体稳定。

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While Rand was hardly the first philosopher to advocate an ethos of individualism, reason, and self-interest, no one formulated it as accessibly or persuasively as she did — or as passionately.

当Rand几乎首创性地成为第一个倡导个人主义思潮，当然，还有利己主义思潮的哲人时，没有人认为她能如愿以偿，抑或在愿望上也是不可行、且缺乏说服力的。

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One simple statistic tells that tale: it costs nearly three times as much to rent a self-drive van for a one-way journey from Los Angeles to Houston as the other way around.

一个简单的数据就能够给出解释：租一辆自驾车由洛杉矶去休斯顿的花费竟相当于起点和终点互换情况下的3倍。

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One simple statistic tells that tale: it costs nearly three times as much to rent a self-drive van for a one-way journey from Los Angeles to Houston as the other way around.

ECONOMIST: Lone Star rising

The journey toward public exposure can be terrifying, but both experts and members of the community agree on its importance in the process of seeing one's self as whole again.

CNN: Strutting their stuff for limb loss awareness

Rembrandt Harmenszoon van Rijn, who died in 1669 aged 63, is widely regarded as one of the most prolific self portraitists, thought to have painted 40-50 pictures of himself in oils and used himself as a model in 32 etchings and seven drawings.

BBC: Abbey painting 'is Rembrandt self portrait'