Moreover, an element that has no content is represented by an empty child list, but a self-closed tag is represented by None. Listing 2 shows this structure in action.

而一个没有内容的元素由一个空的子列表表示，但是一个自封闭的标记由None表示。

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But the city also has the American Visionary Art Museum, a museum that celebrates the work of self-taught individuals.

VOA: special.2011.03.07

If you had a course in probability and statistics, then you'll find it easy to follow, but it's self-contained again.

如果你们学过统计学或者概率论,你们会比较容易理解,也需要你们独立学习

耶鲁公开课 - 金融市场课程节选

Other cells in the immune system recognizing that this is a foreign molecule, but is being presented in the context of a 'self' cell.

免疫系统中的其他一些细胞,识别到它是非己物质,但它已经被识别为己方细胞

耶鲁公开课 - 生物医学工程探索课程节选

But a self-supported ride across country is way harder than what Paul and I did (we went with a company that carried our clothing and provided on-road support).

FORBES: Public Service Message: Americans are Awesome

But a self-guided tour of venues, which you can see from a distance, and of the surrounding neighbourhoods can be taken by downloading a free guide from the non-profit organisation Winning Endeavours.

BBC: Walking London��s Olympic sights

The market for Web stocks is once again bubbling, but a new self-proclaimed DIY fund disrupter is on the scene, Motif Investing of San Mateo, Calif.

FORBES: Magazine Article