XML Schema, in the context of IETF discussions on XML.
以色列和美國對哪些地方發動攻擊？
，详情可参考搜狗输入法下载
int left = 2 * i + 1; // 左子节点
The Rijksmuseum receives many emails from people asking for information about paintings they have inherited or bought, Dibbits said. In this case, they knew it could be something special.