union

1. N-COUNT A union is a workers' organization which represents its members and which tries to improve things such as their working conditions and pay. 工会

Do all teachers have a right to join a union?

所有的教师都有权利加入工会吗？

2. N-UNCOUNT When the union of two or more things occurs, they are joined together and become one thing. 合并

In 1918 the Romanian majority in this former czarist province voted for union with Romania. 1918年，这个前沙俄省份的大多数罗马尼亚人投票支持与罗马尼亚合并。

3. N-SING When two or more things, for example countries or organizations, have been joined together to form one thing, you can refer to them as a union. 联盟

Tanzania is a union of the states of Tanganyika and Zanzibar. 坦桑尼亚是坦噶尼喀州和桑给巴尔州的联盟。