查询词典 have sth. at one's fingertips

Ask sth. of sb.- ask sb. for sth., request

向某人要东西，请求得到

It's important to be polite and considerate .for example,when we ask for sth,we should say,"please",and when we receive sth,we should say,"thank you".

我们与人相处时要有礼貌并估计他人的感受，比如说：要求他人帮忙时，应该说"请"，别人帮了自己时应该说"谢谢"。

To do sth./assist sb. in doing sth.

帮助某人做某事

In doing sth.= assist sb. to do sth.

帮助某人做某事 24。

Assist sb. to do sth./ in doing sth.

帮助某人做某事

Assist at/in sth;Be present at or take part in sth

在某场合出席；参加某事物

At the expense of sth.: with loss or damage to sth.

在损失或损坏某事物的情况下

Attach sth. to sth.

在…上贴上标签 28。

Attempt to do sth / attempt doing sth.

试图做某事

Make an attempt at doing sth. to do sth.

敌人在逃往国外前，妄图把所有工厂都毁掉。

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。