Broadband tech using copper telephone lines to deliver internet.

• Provides fixed-line access over existing subscriber loops.

通过铜质电话线提供互联网的宽带技术。

• 借助现有用户线提供固定接入。

Programming language tailored to a specific application domain.

• Offers concise, high-level constructs for domain tasks.

针对特定应用领域定制的编程语言。

• 为领域任务提供简洁的高层抽象。

Ocean layer where organisms scatter sound and affect sonar.

• Dense biomass migrates daily, reflecting acoustic signals.

海洋中使声波散射并影响声呐的水层。

• 高密度生物群昼夜迁移并反射声学信号。

Appointed lead for child safeguarding in an organization (UK).

• Oversees referrals, policy, and training on protection issues.

机构内指定的儿童保护负责人（主要见于英国）。

• 负责转介、政策与培训等保护事务。