A translator cannot possibly be conversant with every field. Therefore, glossaries and technical dictionaries can come in great handy when dealing with unfamiliar materials. Here are some glossaries on the web:
 

联合国日内瓦中文口译科词汇

FanE 【翻译中国】词汇
广东省外事办常用词汇
中国对外贸易经济合作交际司常用词汇
中国商务部外事司常用词汇
口译分类词汇
中国日报汉英词汇

Financial and business glossaries
Nasdaq Glossary (E-E)
Forbes Financial Glossary (E-E)
Yahoo Financial Glossary (E-E)
Bloomberg.com Financial Glossary (E-E)
Hong Kong Exchanges and Clearing Limited Glossary (E-C/C-E)

English to Chinese, Finance Dictionary (Glossary) from translation Standardization Committee for the Chinese Media, Singapore

Brent Wheeler Limited Financial Glossary
Investwords.com Investing Glossary
Moneyglossary.com
Washingtonpost Business Glossary
摩根士丹利常见金融词汇
Goldman Sachs 高盛财经词汇 -英-汉
Goldman Sachs 财经词汇 - 汉-英
Goldman Sachs 产业词汇
 
Legal Glossaries
双语法例资料系统 from Department of Justice of Hong Kong (E-C/C-E)
English-Chinese Glossary of Terms Used in Electoral Legislation (Hong Kong)
Chinese-English Glossary of Terms Used in Electoral Legislation (Hong Kong)
香港地 政 总 署 英 汉 词 汇
法律词汇汉英互译
Law Dictionary
Legal Dictionary
Legal Abbreviations
 
 
Medical Glossaries
中草药成分英汉对照词汇 English to Chinese glossary of Chinese herbal medicine
英汉医学大词典 English-Chinese Medical Dictionary
实用医学英语会话 including a section on 医院常用名称
网上英汉汉英医学字典
Medicine Plus
Merriam-Webster Medical Dictionary
Medical Dictionary Online
中、美、英、欧在线药典
Biology Online Dictionary
 
Logistics Glossary
海运业务常用缩略语
Logistics Glossary
 
Furniture Glossary
家具用材名称表
 
IT and Computing Related Glossary
中电网每日一词
Glossary of Internet & Web Jargon
Computer Dictionary Online
 
Theater Glossary
A glossary of theater terms
双子同声传译工作室
China Gemini Translation Services
www.chinagemini.com
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