查询词典 not...but

In the core of the larger spiral structure of NGC 1300, the nucleus shows its own extraordinary and distinct "grand-design" spiral structure that is about 3,300 light-years long. Only galaxies with large-scale bars appear to have these grand-design inner disks — a spiral within a spiral. Models suggest that the gas in a bar can be funneled inwards, and then spiral into the center through the grand-design disk, where it can potentially fuel a central black holes. NGC 1300 is not known to have an active nucleus, however, indicating either that there is no black hole, or that it is not accreting matter.

星系演化除了像两个星系相撞那样的剧烈作用之外，还有自己内部很慢的演化，因为一个星系总会有一些引力不稳定，如上图中的NGC1300，它是一个棒旋星系，这种bar结构导致的引力不完全对称会驱使很多气体和尘埃损失角动量往里面落，我们可以清楚的看到dust lanes，有点像黑洞的吸积，但这个星系是个非活动星系，目前还没有黑洞存在的明确证据，but我相信肯定是有的，没有比在星系中心放一个黑洞再完美不过的事情了，或许这些下落的dust lanes是黑洞发光的开始呢。

Battista della Porta in 1589, but it was not until 1611 that Kepler compared a lens of glass to the lens in the eye and showed that rays from each point of an object were brought to a focus at each corresponding point of an image on the retina.?

要注意not until的用法。参考译文：1589年B？巴第思塔？德拉？波尔塔出版了有关透镜的打磨与磨光的书籍，但是直到1611年，凯朴乐才比较了玻璃透镜与人眼的水晶体，并发现来自物体各点的光线都能在视网膜成像上找到对应的点。

Ven the villagers not too sure, but rumors this tree has a bee nest, the villagers use the cellular fire, even the results of this tree along the fire, the final will Shaochuan a hole; It was also said to be the termites in the borers However, this tree is very strong vitality, still continue to grow.

ffect of tree called the tree is a very big hole， but is why 就连村民也不太清楚，但传闻这棵树有一个蜜蜂巢，村民用火烧这个蜂巢，结果连这棵树也一并起火，最后便烧穿了一个洞；也有人说是被白蚁蛀的，但这棵树生命力非常顽强，仍然不断继续生长。

When a staircase appears in the scene, for example, and somewhere in the background we hear the dog's master (who has just arrived at the stairs below) calling "Siao-Pai", then we as viewers can guess by observing the movement of the picture that Siao-Pai is just considering whether he should go down the stairs or not - but we do not know what Siao-Pai actually does.

例如，镜头里出现楼梯，背景远处有主人呼唤「小白！

Now he spoke thus to the Senate, not of any private ill will or malice he bare to Carneades, as some men thought; but because he generally hated philosophy.

如果 because 前面没有 but，并且不了解全文的话，仅仅根据语法分析，我们很难明白他究竟恨不恨哲学。

And nowadays,the tennis ball skirt become shorter and shorter.it seems gentlewomanlyless and genteelless,but it make the athletes more cleanlily and flexible.thay can run after all,and women's tennis become a sport not but the amusement finally,as the hardness for years,the modem women's tennis dress is a vane of fashion,with the profound details of history,and acuminous breath of fashion.

毕竟可以奔跑了，毕竟女子网球终于成为了一项运动而非娱乐。经过百余道年轮的打磨，如今的女子网球服以其深厚的历史底蕴和敏锐的时尚气息成为了一种流行风向标。

I don't know about skating rules but that is not enough to disqualification.

我不可能同意关于这个结果的But。

It is created not but drawing directly on paper, but trough an indirect transfer process.

其创作是一个通过间接性复制而将图像再现在纸上的过程。

Not but the meteor may have shown itself at that point, burning duskily through a veil of cloud; but with no such shape as his guilty imagination gave it; or, at least, with so little definiteness, that another's guilt might have seen another symbol in it.

这并非是说，当时根本没有流星出现并在云霭中隐隐燃烧；而是说并没有他那负罪的想象力所赋予的那种形状；或者，至少不是那么确定无疑--别的罪人也可能从中看到另一种象征呢。

Keeping pets is not prohibited, but bringing a pet onto a bus, especially a crowded bus, is at least inappropriate and illmannered, if not uncultured and illegal.

第三句话说养宠物并不被禁止，但是带宠物上公交车，即使不是无修养的和非法的，也是不合适和不礼貌的。该句中的难点是if not的用法，这里该结构中共用了四个词，分两个明显不同的层级，在同一层级中，后一个又比前一个程度深一些。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。