n. 当事人；党派；聚会；政党机关；同行者（party 的复数）
parties involved交换中的各方
the parties concerned当事人；有关方面；协议双方；当事者
1.He always sparkles at parties.
在各种聚会上，他总是光芒四射。
2.Intensive negotiations between the main parties preceded the vote.
投票之前，主要政党间进行了深入细致的磋商。
3.The various opposition parties speak with one voice on this issue.
在这个问题上各反对党派众口一词。
4.The general lifted the ban on political parties.
将军解除了对政党的官方禁令。
5.Apparently, well known actors were at these filthy parties.
很明显，著名的演员们参加过这些下流的聚会。
6.They organize parties for singles.
他们为单身者组织聚会。
7.I went to a few parties and had a good time.
我参加了几次聚会，过得很愉快。
8.Both major political parties are having to rethink their policies.
两个主要政党都必须重新考虑他们的政策。