Part I concludes, based on an analysis of the functions and principles of tax law on environment, with a theoretical account of the benefits of and the necessity for the law.

并通过对环境税法的作用、原则的分析，从理论上阐述了实施环境税法的优点及其必要性。

On the relevance-theoretical account, the choices and understanding of lexis are based on context, and the hearers make cognitive efforts by constructing the optimal relevance in pragmatic inference.

在关联理论的观照下，词汇的选择和理解就是交际中的听话人依据特定的语境，对词汇的关联特征进行选择并付出认知努力，进而构建最佳关联的语用推理过程。

Dark energy's true nature remains a mystery. Theoretical attempts to account for its observed properties have foundered.

暗能量的真实本性仍然是个未解之谜，从理论上解释观测到的性状已经失败了。

In a cash-balance plan, the company contributes a set amount of salary for each worker every year to a theoretical account for him (even though the money is actually managed in one big pot), and then credits his account with some guaranteed annual return--typically the yield on 30-year Treasuries.

FORBES: Magazine Article

This theoretical threat presupposes a compromised Google account, and Google had worked hard to reduce the possibility of hijacking accounts through tools like phishing and malware detection in Chrome and Gmail, default HTTPS in Gmail, 2-step verification, and others.

FORBES: Android Bug Would Have Allowed Phone Infections From A Computer Click