The invention of the cotton gin was the result of a combination of circumstances which could not have been anticipated.
轧棉机的发明是一系列无法预见的 circumstances 的结果。
A rat in a maze is free to go anywhere, as long as it stays inside the maze.
客户忠诚度是通过一致性、质量和对他们需求的真诚承诺赢得的。
养猪是个技术活，不是谁都能养好的。
资本资产定价模型并非旨在成为资本市场的实证均衡理论，而是一种规范性理论，描述如果投资者以某种方式行事，价格应如何表现。