查询词典 do by sb.

Keep sb. at a distance: treat sb. coldly

与某人保持一定距离；冷淡某人

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

阻止某人做某事，防止某人做某事

I have a general idea of that town.get in touch with sb.; keep in touch with sb.

这两个相似动词短语的区别是：前者是表示动作性的，作"和某人进行接触"解，如

Touch sb on the shoulder , keep in touch with sb = get in tough...

和某某人联系，保持联系。。

B keep sb.company=keep company with sb.

陪伴某人，和……在一起

Shut sb. down: keep sb.

把某人排除在外。

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。

Keep up with sb phr v (=to continue to be in contact with sb )v.

与保持联系

Keekp doing sth/ keep on doing sth/ keep sb doing sth/ keep sb or sth from sth/ stop…………from prevent…………from doing sth/ stop……from doing sth/ prevent……from doing sth 继续Ⅰ.keep doing sth

表示"继续地做某事"指无停顿或停顿较短。或后接表静态的继续不断地做某事动词。

Bear/keep sb/sth in 'mind remember sb/sth 记住某人: We have no vacancies now, but we'll certainly bear your application in mind.

我们目前没有空缺，但是我们一定记住你申请的事。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。