英语翻译成中文，不要工具翻译，专业名词及缩写可以不用翻译

英语翻译成中文，不要工具翻译，专业名词及缩写可以不用翻译
Compared with apatite in removal of Pb and Zn., ferrihydrite behaved quite different. When ferrihydrite was added, it did not greatly influence the transformation of AVS. The results showed that AVS only drop 0.77, whichwas far less than that of apatite. This may contribute to ferrihydrite itself, which effectively retard the oxidation of AVS in sediment. Fe(II)was oxidized to Fe(III). Here, ferrihydrite not only adsorpted the heavy metals but also afforded the electron in sediment. SEM-Pb/AVS and SEM-Zn/AVS declined from 3.2, 8.6 to 2.6 and 7.9, respectively. This result showed that ferrihydrite
had a good impact in reducing the bioavailability and toxicity of heavy metals in sediment. BCR results showed that no obvious effect was found on ferrihydrite in immobilizing of Pb. However,
residual fraction of Zn increased to 16% after 5 months, which mainly came from the decreasing of acid soluble and oxidizable phases.
From Table 2, Figs. 1(c) and 2(c), we can see that SEM-Pb/AVS and SEM-Zn/AVS declined from3.2, 8.6 to 1.9, 6.9, respectively. The residual fraction of Pb, Zn reached 24%, 20%, respectively, after 5 months stabilization action. It can be concluded that apatite and ferrihydrite did not prevent each other on stabilizing heavy metals in their role. On the contrary, apatite + ferrihydrite composite addition had a synergic effect both on controlling and stabilizing of the bioavailability and toxicity of heavy metals.