不是...就是...

In two performances of Die Walküre, audiences in the War Memorial Opera House heard Flagstad as Brünnhilde and Lotte Lehmann as Sieglinde, with Fritz Reiner conducting, Lauritz Melchior as Siegmund, Emanuel List as Hunding, and Friedrich Schorr as Wotan.

于是乎在歌剧《女武神》的第二幕演出中，在旧金山著名的战争纪念剧院里，观众们听到了前所未有的巨大威武却又美妙无比的声音之艺术，其中就有我们的顶级瓦格纳女高音弗拉格丝塔特小姐所饰演的拿手好戏——主角&布伦希尔德&以及另一位超级瓦格纳女高音劳特莱曼小姐所饰演的&齐格琳德&一角，在匈牙利著名指挥大师弗朗兹莱纳的杰出指挥棒下，还有名伶大师的加盟呢：那就是歌唱大师劳瑞兹梅尔乔所饰演的&齐格蒙德&，埃曼努尔里斯特所饰演的&洪丁&以及大师弗里德里希肖尔所饰演的&沃坦&：这样那令人叹为观止的舞台表现和戏剧效果是不是活灵活现的呈现在你眼前了呢？

But the report is sile,nt on proposals from Jacqui Smith, the home secretary, for a "superdatabase" tracking everybody's emails, calls, texts and internet use and from Jack Straw, the justice secretary, to lower barriers on the widespread sharing of personal data across the public sector.

但是报道并没减少，特别是内政大臣的提议，那就是建立一个超级数据库，跟踪监视每人的邮件，电话，信息，因特网使用。也不是律政司司长的关于降低公共部门的广泛个人数据分享的阻碍。

Thirteen dollars a day is the poverty line in America, sothis category might be described as people who are middle-class bydeveloping-country standards but not by American ones.

每日13美元是美国的贫困线，所以这类人在发展中国家就是人们眼中的中产阶级了，但是在美国却不是。

Parts of seventeenth-century Chinese pleasure gardens were not necessarily intended to look cheerful ; they were designed expressly to evoke the agreeable melancholy resulting from a sense of the transitoriness of natural beauty and human glory.

一些17世纪的中国乐园不是一定要看起来让人快乐，它们显然是设计来激起一种令人愉悦的忧伤，这种忧伤源于这样一种意识，就是我们意识到大自然的美和人类的荣光短暂易逝。

All seem to be leaving, and in their desperation, they do not leave smears or scratches, and they can only make noises by confliction, by rubbing the surface with their unsmoothness, and by resisting the relative motion.

同样的真切，但是都不可逮，都在离去。留下的，也就是一种离去的痕迹。不是什么污渍或者划痕，而只能是一些噪音。离去的，以不平的表面摩擦另一物体的表面，抵制着相对运动。

Potential threats must be weeded out. Your feelings are a menace to the unity of our organization.

不是你死就是我亡，潜在的威胁必须清除，你的情绪对我们组织的团结是个威胁。

"If you can do that, great, it certainly is optimal," Berger says."But in the real world, it may not be optimal, but it is certainly appropriate for busy people to take their daily allergy medications wheneer they can regularly do so."

Berger表示，如果你能做得到，非常好，这样一定是最理想的，但在现实生活中，它也许不是最理想的，对忙碌的人来说，只要每天能定时服用过敏药物就是恰当的。

We hereby ensure the durability of the surface finishing of E-coating, at least no discolouration or ffading within 12 months!

人生就是一段旅程，在乎的不是目的地，在乎的是沿途的风景以及看风景的心情！

Oh, to put one's foot down means to take a really firm stance on something and enforce it.

Put one's foot down 就是采取坚定的立场，严厉执行。你妈妈是不是也曾经对你这么严格啊？

L: Oh, to put one's foot down means to take a really firm stanceon something and enforce it.

H： Put one's foot down就是采取坚定立场，严厉执行。你妈妈是不是也曾经对你这么严格啊？

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。