“在场者”可以用英语表达为 “those present” 或 “the people present”。
“those present” 是一个较为简洁、常用的表达，直接指代“在场的人”。
“the people present” 意思更为明确，强调“在场的人”这一群体。
例如：
Only those present at the meeting know the full details.（只有出席会议的人才知道全部细节。）
The teacher took attendance to see who the people present were.（老师点了名，看看在场的人都有谁 。 ）