Even though it is not a "wall", I will use that term since it has become an industry de-facto standard.
即使跟本没有这道墙，我仍然采用这个术语，因为它已然成为一个习惯用词，就像是一个工业标准一样。
To set rate of equity returns is a critical step for long-term investment decisions, but in a realistic irrational world, its not easy to do that using CAPM familiar in standard financial theory.
确定股权回报率是进行长期投资决策的关键步骤，但在现实非理性世界中难以直接运用传统财务理论所推荐的资本资产定价模型来确定股权回报率。
If an appropriate symbol or abbreviated term is not included in any of the parts of ISO 1043, such a symbol or abbreviated term from any available national or international standard shall be used.
若需标记塑料产品，应在其表面某处用适当的标准符号或术语缩写（将其置于标点符号“”和“”之间）标记。
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