All attributes in alphabetical order, preceded by a single space, with no space on either side of the equals sign, and double quotes around the attribute value.

所有的属性按照字母顺序排列，前面有一个空格，等号、包含属性值的双引号两侧没有空格。

youdao

Use a single space before each namespace declaration, no space on either side of the equals sign, and double quotes around the namespace URI.

每个名称空间声明之间有一个空格，等号和包含名称空间的URI两侧没有空格。

youdao

Double blind controlled trials have shown thatCoQ10 improves symptoms, functional capacity and quality of life in patients with heart failure with no side effects.

双盲控制试验表明辅酶Q10改善心衰患者症状，功能及生活质量且没有副作用。

youdao

With his side showing no sign of a breakthrough, Le Guen resorted to a double substitution, with Kris Boyd and Chris Burke replacing Dado Prso and Libor Sionko.

BBC: SPORT | Football | Scottish Premier | Dunfermline Ath 1-1 Rangers