Organizations of workers formed to protect and advance their interests

• Groups negotiating pay, benefits, and conditions through collective bargaining

为维护和拓展工人权益而成立的组织

• 通过集体谈判协商工资、福利与工作条件的群体

Acts or states of joining into one; unity or combination

• Conditions of being united for a common purpose

合并为一体的行为或状态；统一与结合

• 为共同目的而联合的状况

Student organizations at universities for social or political activities

• Campus buildings or bodies providing services and events for students

大学里的学生团体，用于社交或政治活动

• 提供服务与活动的校园学生会机构或建筑

Joints or fittings that connect parts, especially sections of pipe

• Devices allowing easy assembly or disassembly of connected parts

连接部件的接头或配件，尤指管道接头

• 便于装配或拆卸已连接部件的装置

In set theory, sets formed by combining all elements of given sets

• In computing, data types able to store one of several types

集合论中：包含若干集合全部元素的集合

• 计算机中：一次可存储多种类型之一的数据类型