查询词典 used to be

No problem I used to be a bartender I can help you out, what do you want to know?

没问题，我以前是站吧台的，你想知道什么？

That little bauble is not to be compared with this enormous jewel.but to is frequently used in this context and is not incorrect.

那个小摆设不能与这个大宝石相比较。但 to常用于此上下文，也是正确的

First, the formal representation of the search environment is established, the multi-UAV is modeled as a controlled system and the predictive model of the system is presented. Considering the uncertainty of the sensor measurement and the environment, a Search Probability Map is defined and the updating method based on Bayes formula is presented. Based on SPM, information gain is defined to measure the search effects and used to be the optimization object in the predictive horizon. By using of GA, the solution of the optimization problem is got and it is taken as the input of the controlled system.

首先，建立搜索环境的规则描述，然后将多个UAV建模为一个控制系统，建立系统的预测模型，考虑到UAV传感器测量的不确定性和环境自身的不确定性，建立搜索概率图描述搜索环境的不确定性，给出了基于Bayes准则的搜索概率图更新方法，继而基于搜索概率图定义信息增益来衡量搜索效果，并将预测周期内的优化目标定为最大化信息增益，采用遗传算法进行求解，得到最优解作为被控系统的输入。

She has a friend who used to be addicted to drug.

她有个朋友过去常常吸毒。

My mother used to be allergic to garlic.

我妈妈过去对大蒜过敏。

The door to his house used to be crowded with visitors who had since deserted him.

他家原先整天门庭若市，现在却"门前冷落车马稀"。

His desire to do everything -- because he can do everything -- used to be his fatal flaw.

他想要做所有事情的渴望——因为他无所不能——曾经是他的致命弱点。

What used to be considered a hole in the sky is now known to astronomers as a darkmolecular cloud.

以前我们认为它是天空中的一个洞，现在则知道它是个暗分子云。

Old roads used to be paved with round stones to help the horses to walk easily.

旧时的道路常用圆石铺路面，使马匹易于行走。

He used to be prone to anger.

他以前动不动就生气。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。