This is the 3150th most frequent Chinese word.
为首
"为首" means "to lead" or "headed by."
这里为首表明由美国总统作为领导者或首领。
这次会议由美国总统为首,讨论了许多全球性议题。
This meeting, led by the President of the United States, discussed many global issues.
这里为首表示由年轻人作为主要的倡议者。
抗议活动以年轻人为首,呼吁社会重视环保问题。
The protest was led by young people, calling for society to pay attention to environmental issues.
这里为首描述队长以领导的角色出现。