The Boolean operators intitle and inurl work in Google directory, as does OR.

Try search using a search term that includes "inurl: pdf" in the end or "intitle: pdf" .

尝试搜索使用的搜索字词，包括放置“inurl：PDF格式”在年底或“标题：PDF格式”。

It is Xiaotao Hong-Prunus triloba.

它，就是小桃红――榆叶梅。

This article was created to meet the increasing demand for information on cultivation of the native American pawpaw, Asimina triloba.

这篇文章是为了满足种植者对美国本土泡泡树种植技术日益增长的需要而撰写的。

Objective: To observe the function and feature in anti inflammation and analgesic effects of the liquid extraction of ethanol of Cudrania tricuspidata ( Carr.)

目的：观察柘树茎乙醇提取液抗炎、镇痛的药效学作用特点。

Isolation, Purification, Physical and Chemical Properties Analysis of Cps-1 Polysaccharides from Root of Cudrania triouspidata ( Carr.) Bur

柘树根多糖CPS-1的分离纯化及理化性质分析

Liquid extraction of ethanol of Cudrania tricuspidata: anti-inflammation and analgesic effects

柘树茎乙醇提取液的抗炎镇痛作用

Inhibitory action of Cudrania tricuspidata ( Carr.) Bun Flavonoid on S180 mice's tumor growth

柘木根黄酮注射液对小鼠S180肿瘤的抑制作用

Then there must be a large cudrania grove here, otherwise the waterfall wouldn't have been called Zhelin ( Cudrania Grove) Waterfall.

那这周围肯定有大片大片的柘树林，要不然这处瀑布怎么会叫柘林瀑呢。

When we navigate the ocean, or when we predict an eclipse, we often find it convenient to assume that the earth goes round the sun and that the stars are millions upon millions of kilometres away.

比如我们在大海上航行的时候，或者在预测日食月食的时候，我们常常发现，假设地球绕太阳而转，星星远在亿万公里之外，这样比较方便。

In order to calculate and predict a solar eclipse accurately, the ancient astronomers need to design a relevant algorithm to eliminate the effect of lunar parallax.

为了提高日食预报和计算水平，古代的天文学家在推算日食时必须设计相应的视差算法以消除视差影响。

Astronomers can predict an eclipse.

天文学家们能够预测日蚀。

Why could we observe eclipse instead of annular eclipse of the moon?

为什么能观察到日环食，而不能观察到月环食？

And the Russians allow them to continue to observe the eclipse.

而俄国人允许他们继续观察日食。

The Morcom family had gone to Yorkshire in 1927 to observe the total eclipse of the sun on 29 June, and Christopher had been taken terribly ill in the train coming back.

1927年6月29日，默卡一家到约克郡观看日全食，在返程的火车上，克里斯朵夫就已经病得厉害了。

With so many drivers stopping to observe the eclipse, Shanghai traffic police had to increase the number of temporary parking spaces, according to CCTV.

据中央电视台报道，上海市交警部门今日增设了许多临时停车点，以满足司机停车观看日全食奇观。

Many actors go into eclipse after death.

许多演员死后声名衰退。

He heard an old man telling about the thorn hedge. It was said that there was a castle behind it, in which a beautiful princess named Little Brier-Rose had been asleep for a hundred years, and with her the king and the queen and all the royal attendants were sleeping.

一位老大爷向他讲起了蒺藜树丛的故事，说树篱之内有一座漂亮的王宫，王宫里有一位仙女般的公主，她的名字叫玫瑰公主，她和整座王宫及里面的人都在沉睡。

Finally, the ship arrived in Martinique and the coffee tree was replanted, where it was surrounded by a thorn hedge and watched over by slaves.

最终，船到达马提尼克岛，咖啡树被种在了这里，树的周围竖起了带刺的篱笆，由奴隶看守。

When a king's son came near to the thorn hedge, it was nothing but large and beautiful flowers.

当一位王子走近了荆棘的时候，却发现荆棘没有了，而是又大又美丽的花儿。

He also knew from his grandfather that many princes had come and tried to penetrate the thorn hedge, but they had become stuck in it and died a sorrowful death.

听了这些，这位王子说：「所有这些都吓不倒我，我要看玫瑰公主去！」老人劝他不要去试，可他却坚持要去。