key source of tax revenue 重点税源
key source detail 密码索引
Key source investigation 关键知情人调查
key petroleum source bed 标准生油层
key pollution source 重点污染源
key light source 主光源
source key [计] 源关键字 ; 源关键码
data source key 数据源关键 ; 资料源关键
Source color key 源关键色
Software has become a key source of new computer products and services.
软件已成为新兴电脑产品和服务的关键资源。
Software has become a key source of new consumer products and services.
软件成为新的消费类产品和服务的核心来源。
Firstly, insects cannot be part of a vegan diet and are probably the key source of B12 in most primate diets.
首先,昆虫不能成为纯素食的一部分,而昆虫很可能是多数灵长类动物饮食中b 12的主要来源。
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