One picture for entrant: someone through a doorway that other people are already inside. The word says nothing about how good they are or how long they will stay — only that they have crossed the line and now count as one of the people in there. Change what is behind the door and you change the sense: a race, a university, a whole industry.
From the word’s history
The packet gives the word as French entrant, the present participle of entrer, to enter — literally the one who is entering. The image and the origin are the same thing here.
資料顯示這個字來自法文 entrant，是動詞 entrer（進入）的現在分詞，字面就是「正在進去的人」。這裡的畫面和字源剛好是同一件事。
Wiktionary etymology supplied in this packet: From French entrant, present participle of entrer (source_ref kaikki:3f6f69a190036ae4:1270912712:6119)
登入就可以看每一支怎麼連回核心畫面。