查询词典 learn sth. by heart

They invited us to lunch. invite sb. to sth./ do sth.

邀请某人到某个地方或做某事

Invite sb. to sth./ invite sb. to do sth.

邀请某人到…/邀请某人做

It is a time for sth/to do sth.

该是……的时候了

Keep at sth/doing sth.

坚持做某事。

Keep on doing sth. keep doing sth.

是继续不停地做某事

Keep on doing sth:continue doing sth.

不断做某事。

Keep sb. from doing sth.: stop sb. from doing sth.

阻止某人做某事，防止某人做某事

Keep one's mind on sthbcontinue to pay attention to sth; not be distracted from sth

继续专心於某事物；不因某事物分散注意力

Keep sb / sth from doing sth.

"阻止、防止某人/某物做某事"如

Stop/prevent sb doing sth =keep sb from doing sth.

阻止某人做某事，只是后面一个句子中的from 不可以省略。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。