Human language is productive, an open-ended communication system, whereas no other communication system has this property.

人类的语言是多产的，是一个开放的交流系统，而其他交流系统都没有这种特性。

youdao

Team leaders for Beijing have in particular been studying how to take advantage of the open-ended gymnastics scoring system introduced since Athens, which rewards difficulty and execution separately.

特别是，征战北京奥运的领队们一直都在研究，如何利用自雅典奥运会开始启用的尚未成熟的体操评分系统。该评分系统对难度和完成程度分别进行打分。

youdao

Leases are open-ended and rent increases are controlled by a system pegging rents to those charged for comparable properties.

租期是无限制的，而且通过钉住可比物业的收费标准，租金涨幅得以控制。

youdao

The IoD report says under an open-ended system, a graduate tax becomes the student loan you never pay off and would be "a tax on effort and merit".

BBC: Graduate tax 'could hit UK's competitiveness'

He has devised a plausible alternative to the current open-ended, state-financed system: government-funded vouchers toward buying insurance.

ECONOMIST: Paul Ryan: The man with the plan | The