燕子

They have ALSO asked for news of the arrival of swifts, swallows, bumble bees, queen wasps, and daisies

同时他们也征集有关雨燕、燕子、大黄蜂、胡蜂后和雏菊花出现的消息。

Chen Sheng sighed:"How can the little birds like swallows and sparrows know the aspirations of the rocs and swans?"

陈胜叹息道：&唉，燕雀安知鸿鹄之志哉（燕子、麻雀这些小鸟哪里能知道大雁和天鹅的志向啊）？&

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。