需要时

For the characteristics of the high-rise building fire, such as the mass evacuee, the long upright travel distance and the fast upright diffusion of fire smoke, the evacuation is different from that in ordinary buildings.

高层建筑内人员集中，垂直疏散距离长，烟气垂直方向扩散快，火灾情况比一般建筑内的复杂，因此需要对其火灾时的安全疏散进行评估。

ATM机竟能吐黄金 On May 13, the ''Gold to Go'' vending machine, an ATM machine that dispenses gold in exchangefor cash based on the latest prices, was unveiled inside Abu Dhabi's Emirates Palace hotel ...

快速阅读四大方法在阅读英语材料时或是在考试过程中有很多人感到自己的阅读速度实在是跟不上需要，有些朋友就认为是自己的英语基础不行，然后就拼命的背单词，其实如果能够用正确的方法进行快速阅读训练的话，即使在原有的基。。。

And as you come out, new emotions are being stimulated; emotions of trust in the universe, knowing that you always have everything you need when it you need it, feelings of joy, of expansiveness, of spaciousness in your life.

当你离开时，你会有新的情绪被激发：信任宇宙的情绪、明白你总是拥有需要的一切，在生活中感到喜悦、扩张和空间感的感受。

Objective To investigate the effects of early postoperative rehabilitation exercise on anal exsufflation in patients following cholecystectomy. Methods 120 cases of patients undergoing cholecystectomy were randomly divided into three groups according to the time of postoperative exercise. The time of anal exhaust after cholecystectomy in the 120 patients was noted and analyzed.

胆囊切除手术患者因麻醉、手术创伤、牵拉等刺激，加之手术时腹腔开放，热量的散发，常导致胃肠功能紊乱，主要表现为肠蠕动消失，术后排便功能障碍，胃肠道运动从抑制到完全恢复需要一定时间，术后腹胀是临床常见且比较棘手的护理问题，如处理不好，对腹壁切口的愈合有不良的影响。

When speaking extemporaneously, you will have only a brief set of notes or a speaking outline.

当你即席演说时，你只需要准备一小段简短的提要或者一个演讲大纲即可。

When you really need extensibility, then patterns provide you with a way to achieve it and this is cool.

当你真的需要他的扩展性时，那么这些模式将会向你提供一种思路，那将是很酷的。

Based on the extensiveness and completeness of the Project Plan , the testers can estimate the amount of resources they will need to test the implemented software solution.

根据项目计划的扩展性和完整性，测试人员能估计出在进行执行软件方案测试的工作时所需要的资源量。

In general, each server has a hard exterior light, under normal circumstances is usually green light when there are special circumstances, we need to adopt relevant measures, double-check whether the facilities of a normal hard disk.

一般来讲，服务器外观都有每一块硬盘指示灯，正常情况下一般会是绿色，指示灯出现特殊情况时，就需要采用相关措施，仔细检查硬盘设备是否正常。

It is desirable but not mandatory that multiple parts be extractable independently so that partial data can be recovered if one of the parts is damaged.

这是必要，但不是绝对的，因为当一部分数据毁坏时，还需要得到其它部分的内容。

During your presurgical eye exam, your eye doctor uses highly specialized instruments to determine which specific areas of your cornea need to be flattened or curved. This allows your eye doctor to chart your eye and remove tissue from your cornea very precisely.

你的眼科医生在手术前的眼睛测试时使用很专业的仪器确定手术面积——需要变平或者变弯的角膜面积，然后绘制你的眼睛图，并且从角膜上精确地移除组织。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷