外交活动的英文：
diplomatic activities

参考例句：

China has conducted fruitful diplomatic activities in both bilateral and multilateral contexts.
我国进行了卓有成效的双边和多边外交活动。

diplomatic是什么意思：
adj. 外交的，从事外交的；有外交手腕的；圆滑的

The lady is a diplomat.
那位女士是个善于交际的人。

a permanent diplomatic mission
常驻外交使团

Cowperwood was always so diplomatic.
柯帕乌一向是很有外交手腕的。

Her mother is a ranking diplomat.
她妈妈是高级外交官。

The diplomatic corps will come here.
外交使节团会来这儿。

activities是什么意思：
n. 活动；活动力；行动

She is an active participant in this activity.
她积极参与这项活动。

They are union actives.
他们是工会积极分子。

contamination activity
污染放射性

He took an active part in the extracurricular activities in the school.
他积极参加学校的课外活动。

The students take an active part in the school activities.
同学们都积极参加学校组织的各项活动。