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complicated nature background 复杂自然背景
The complicated nature of the farmer's job gave him unrivaled training in invention and practical skill with tools and machines. 农夫那份工作的繁复，给了他在发明和实际使用器具与机械方面无比的训练。
Conclusion The complicated nature and geography enviroment decided complexity of Calliphoridae species. 结论河北省复杂的自然地理环境决定丽蝇复杂的种类。
The Chinese calendar is full of wisdom passed down through thousands of years in China, but its complicated nature often deters people from using it. 农民历是中国流传千年的智慧，但繁杂的内容却也常令人敬而远之。
The results showed that HPLC/ESI MS was a convenient, rapid and effective method to analyze complicated nature products qualitatively and quantitatively. 结果证明对于复杂天然产物的定性定量分析 ;高效液相色谱电喷雾质谱 (HPLC/ESI MS)联用分析法是一种方便快捷有效的方法 .
The results show that the radioactivity level of varied water bod-ies of the city was within normal natural background. 调查结果表明，上海市各类水体中天然放射性核素浓度属正常本底水平。
Phenomena These ocean waves are among the earth's most complicated natural phenomena. 这些海浪属于地球上最复杂的自然现象。
The results show that the radioactivity level of variedwater bodies of the province was within normal natural background. 调查结果表明,全区绝大部分水体中天然放射性核素浓度属正常本底水平,个别水样核素浓度偏高。
His disease was complicated by pneumonia. 他的病因肺炎并发症而变得更严重。
There are 575 deluxe rooms of various styles in the 550 mu tropic plants garden of the hotel, preparing amazing natural background for this picture-like resort. 酒店现有575间风格迥异的豪华客房点缀于550亩的热带植物花园中,为这一风景如画的仙游圣地平铺了靓丽的天然底色。
ABSTRACT: China is a large country with complicated natural conditions and often suffered from different natural disasters, especially flood and waterlogging. 摘要：中国国土辽阔，自然地理条件复杂，是一个自然灾害发生较频繁的国家，尤其是洪涝灾害。
On the whole, cities enjoyed good acoustic environment and radioactivity pollution maintained at natural background level. The total amount of arable land was on decline. 城市声环境质量较好,辐射环境质量基本维持在天然本底水平。
When natural background sounds, like the engine tickover of a parked car, were added, the hybrids' direction sometimes could not be detected until they were perilously close. 如果添加诸如停车时发动机的空转此类自然背景音，有时混合型汽车的方向在危险距离之前根本无从判断。
It's only human nature to want a comfortable life. 想过舒适的生活不过是普通人的本性。
The old wove what he said into a complicated story. 那位老人把他说的编成了一个复杂的故事。
The rates of extinction of local species that accompany these rapid changes in land cover may soon be far in excess of what is found today,reaching as high as 10,000 times the natural background rate. 伴随着这些士地覆盖的迅速变化，当地物种灭绝的速率可能很快便大大超过了我们今天所发现的，达到自然的1万倍。
The rates of extinction of local species that accompany these rapid changes in land cover may soon be far in excess of what is found today, reaching as high as 10, 000 times the natural background rate. 伴随着这些士地覆盖的迅速变化，当地物种灭绝的速率可能很快便大大超过了我们今天所发现的，达到自然的1万倍。
In this paper, an algorithm based on watershed transformation and fuzzy logical catchment basins combination is proposed to suppress or remove the feature of natural background, and applied to infrared object boundary detection and labeling. 文中在分水岭算法的基础上，结合模糊逻辑方法，对自然背景下的红外人工目标的边界检测和分割以及红外背景的抑制进行了探讨。
All nature seemed pregnant with life. 整个大自然似乎充满了活力。
To improve the detectable limit of radioactive aerosol monitors, it is very important to eliminate the inter-ference of the natural background, i.e. radon and thoron daughter aerosol. 为提高放射性气溶胶监测仪的灵敏度,消除天然本底即氡子体气溶胶的干扰是极为重要的。