Because the face of the woman in the under image also appears on canvases Van Gogh is known to have painted, the surface painting must be an authentic self-portrait by Van Gogh.

因为下面的女人的脸也出现在梵高画过的画布上，所以这幅凸版印刷一定是梵高的自画像。

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The self cleaning technology can repel dust when sensors detect concentrations on the panel's surface have reached a critical level.

当传感器发现面板表面的灰尘浓度达到一定水平时，自我清洁技术可以将其清除。

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"Just asking one's self those three simple questions often will surface some concrete things one can do to improve," says Hackman.

“常问问自己上面的三个问题，就能在做每件具体事上都得到提升，”哈克曼说。

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While I do not think United's season will go into freefall if they are beaten by Liverpool there is always the possibility that self-doubt could surface.

BBC: Alan Hansen on Liverpool v Manchester United

Led by Sinise, who edges his profile into every shot as if he were a model in a rustic clothing catalogue, and Malkovich, who carries on like a further infantilized Tommy Smothers (his upper register recalls Tweety Bird), the cast acts with self-conscious, surface physicality.

NEWYORKER: Of Mice and Men

Things like measuring and reducing attack surface, self-defending data, damage-potential effort ratios, fully homomorphic encryption, and end-to-end message confidentiality.

FORBES: Work will find a way: manage the true risk