剑桥在线词典给出的释义如下：

在金融领域，“Crown jewel”：A particularly profitable or otherwise particularly valuable corporate unit or asset of a firm. Often used in risk arbitrage. The most desirable entities within a diversified corporation as measured by asset value, earning power, and business prospects; in takeover attempts, these entities typically are the main objective of the acquirer and may be sold by a takeover target to make the rest of the company less attractive. See: Scorched earth policy.

大概是说，“Crown jewel”指的是公司中特别有利润或价值特别高的企业单位或资产。通常用于风险套利。在多元化公司中，以资产价值、盈利能力和商业前景来衡量，这些最有价值的实体通常是最有吸引力的；在收购尝试中，这些实体通常是收购方的主要目标，被收购目标出售以降低公司其他部分的吸引力。

在中文里，“Crown jewel”可直译为“皇冠之珠”“皇冠明珠”。

一些具体的用法和使用场景可参考如下双语示例：

In the telecommunications industry, the company's fiber optic network, renowned for its extensive reach and high-speed connectivity, is regarded as the crown jewel asset, attracting potential investors keen on expanding their market presence in the digital infrastructure sector.

在电信行业中，该公司以其覆盖广泛和高速连接而著称的光纤网络被视为皇冠明珠资产，吸引了那些热衷于扩大数字基础设施领域市场份额的潜在投资者。

Amidst the merger talks, the pharmaceutical giant highlighted its research and development division as the crown jewel of the organization, emphasizing its pipeline of innovative drugs and patents, crucial for future revenue streams and market dominance.

在并购谈判中，这家制药巨头将其研发部门凸显为组织的皇冠明珠，强调其创新药物和专利的研发管线，对未来的收入来源和市场主导地位至关重要。