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It is revealed in the study that the heavy metal concentration of Pb,Cu,Zn in the leaves of urban trees (Sabina chinesis,Platycladus orientalis,Euonymus japonicus,Platanus acerifolia, Prunus cerasifera) is significantly related with the relative heavy metal contents in atmospheres of different urban regions of Yantai city, while no such relationship is found in heavy metal Cd, and that the heavy metal amounts of Pb,Cd,Cu,Zn in urban soils had no direct impacts on the heavy metal concentrations in leaves of urban trees.

通过对烟台市区不同大气污染区域绿化植物叶片中重金属Pb，Cd，Cu，Zn富积量和大气与土壤中相应重金属的含量研究分析发现，植物叶片中重金属Pb，Cu和Zn的富积量与大气中Pb，Cu和Zn的相对含量呈显著的正相关，而植物叶片中Cd的富积量与大气中重金属的相对含量相关不显著。

Cd, Pb combined pollution could promote Pleurotus ostreatus on Pb absorption and inhibit Cd absorption.

Cd、Pb复合污染能促进平菇菌丝体对Pb的吸收，而抑制对Cd的吸收。

All companies in Thailand in early 2002 that a 'high-tech world, as China's first China Aerospace Group / Houston hospital / yellow rope lead the entire group radiation center Thai Plant, in full production, pyrocondensation Casing has approved UL / cUL International Security Certification, the industry took the lead at home and abroad by SGS comprehensive test: lead Pb, Cd Cd, mercury Hg, hexavalent chromium Cr, PBB PBBS, PBBs ether PBDES.

全泰公司于2002年初在著称'世界高科技、中国第一照的中国航天集团/中国火箭院/中国黄缆集团辐照中心筹建全泰二厂，已全面投产，热缩套管已通过UL/cUL国际安规认证，国内外同行业率先全面通过SGS测试：铅Pb、镉Cd、汞Hg、六价铬Cr、多溴联苯PBBS、多溴联苯醚PBDES。

In the present study,growth responses of Rorippa globosa and its accumulation characteristics of Cd and As were examined under the condition of Cd-As combined pollution.

结果表明，在低浓度Cd-As复合污染条件下，由于Cd、As的拮抗作用，从而促进植物的生长发育，同时也促进地上部对Cd的吸收和积累。

The results showed that the Cd contents in soil were between 0.012-0.87mg/kg in Panlian district, and 0.019-0.47 mg/kg in Salian district. There were 15%, 19% of Cd contents in soil surpassing the Ⅱgrade environment standard in Panlian and Salian district respectively.

结果表明攀莲蔬菜基地土壤镉含量在0.012~0.87mg/kg之间；撒莲蔬菜基地土壤镉含量在0.019~0.47mg/kg；攀莲蔬菜基地和撒莲蔬菜基地分别有15%和19%的土壤镉含量超过国家土壤环境质量Ⅱ级标准。

This paper studied the effects of different anion species（Cl-, SO42-）, concentrations and Cd level on Cd absorption of spinach Spinacia oleracea ）through pot experiment.

通过盆栽试验，研究了不同种类与浓度的阴离子（Cl-， SO42-）以及不同镉水平对菠菜镉吸收的影响。

Spirodela polyrhiza was cultivated in Steinberg medium with different concentration of Cd(superscript 2+) for 4 days to study the toxic effect of Cd(superscript 2+) on this kind of plant.

为了研究紫萍是否可以应用于有重金属镉污染的富营养化地表水体的治理和生态修复中，以不同浓度的镉处理4d的紫萍为实验材料，研究了在短期的培养条件下镉对紫萍生长的影响。

Regressive analysis showed that there were linearly positive relationships between PC contents and Cd toxicity in E. nuttallii and P. stratiotes L.. It was indicated that PCs could be a promising biomarker for estimating Cd toxicity.

回归分析显示，2种水生植物体内PCs的合成水平与Cd的生物毒性呈现一定的线性关系，表明PCs可作为重金属Cd胁迫的生物标记物指示水体中重金属的毒害程度。

Compared with E. nuttallii, PCs in roots of P. stratiotes L. was sensitive to Cd contamination and may be a sensitive indicator to reflect Cd toxicity in the aquatic ecosystem.

比较而言，水浮莲体内PCs对Cd污染更为敏感，可通过检测其根系PCs的含量来评价和预测实际水环境中Cd的污染。

Influence of different contents of Cd in soil on the growth and yield of triticum aestivum as well as the accumulation of Cd under a potted experiment has been studied.

中文摘 要：采用盆栽试验的方法，研究了土壤中不同镉浓度对小麦生长、结实及重金属镉富集的影响。

Chinese traditional virtue is humility and wariness,the compliment and praise to the others should be declination

中国人的传统美德是谦虚谨慎，对别人的恭维和夸奖应是推辞。如

We bought this house on the never-never.

我们以分期付款的方式买下这座房子。