in the first place,it affords tourists opportunities to expe

the internet affords anonymity to its users,a blessing to privacy and *** of speech.
a blessing to privacy and *** of speech.在该句中做什么成分?

英语翻译
The Internet affords anonymity to its users,a blessing to privacy and freedom of speech.But that very anonymity is also behind the explosion of cyber-crime that has 1 across the Web.
Can privacy be preserved 2 bringing safety and security to a world that seems increasingly 3
Last month,Howard Schmidt,the nation’s cyber-czar,offered the federal government a 4 to make the Web a safer place-a “voluntary trusted identity” system that would be the high-tech 5 of a physical key,a fingerprint and a photo ID card,all rolled 6 one.The system might use a smart identity card,or a digital credential 7 to a specific computer .and would authenticate users at a range of online services.

英语翻译
求翻译 ,trust is a fragile thing,once earned,it affords us tremendous ***.but once trust is lost,it can be impossible to recover.

英语翻译
Using Cu/γ-Al2O3 as catalysts the reaction affords after 24 h a mixture of cyclohexanone (I) and cyclohexanol (II) (1.4:1 ratio) in yields of 9.2 %,with a specific catalytic activity (mol products/g atom Cu) of 155.The catalyst can be reused without valuable loss of activity.Under the same reaction conditions the Cu/Fe2O3 catalyst gives cyclohexanone and cyclohexanol (1:1.5 ratio) with comparable yields (9.85 %) and a specific catalytic activity of 165.The life of this catalyst,however,is quite poor:in the second experiment (run 5) the yields dramatically decrease to 1.9 % and the catalyst turns quite inactive (run 6).The Cu/TiO2 sample is also active in the oxidation of cyclohexane to cyclohexanone and cyclohexanol with good yields (7.2 %) and high selectivity to cyclohexanone (12:1).The catalyst maintains its activity when reused,while the molar ratio cyclohexanone/cyclohexanol changes from 7.3:1 (run 8) to 3.1:1 (run 9).
The leaching of Cu from freshly prepared and recycled catalysts has been also valuated by atomic absorption analysis of the reaction mixture.The results are summarized in table 2.