cooperator

Each cooperator in the project was responsible for a specific task.

用法提示：这里“cooperator”作名词，表示“合作者”，指项目中的参与人员。

The cooperative society requires every cooperator to attend the annual meeting.

用法提示：此处“cooperator”为名词，意为“合作社社员”，指合作社的成员。

As a cooperator in the research, she contributed valuable data.

用法提示：句中“cooperator”是名词，指“合作者”，强调在研究中的协作角色。