contact group的用法和樣例：
例句
- The Customer Liaison Group takes a close look at our System Control Centre.
客戶聯絡小組成員參觀港燈系統控制中心，了解運作情況。 - The Hong Kong Guangdong Environmental Protection Liaison Group was set up in 1990 to facilitate exchanges on environmental issues of mutual concern.
一九九零年成立的粵港環境保護聯絡小組，有助兩地就雙方關注的環境問題交流意見。
