source: Anime Come GIF - Anime Come LeadTheWay - Discover & Share GIFs

come + in

〈人･物が〉 «…から/…のために/…を通って» (部屋･建物･施設･国などに)入る, 入ってくる «from/for/through»

come in

1. join or become involved in an enterprise:

【計画･契約などに】かかわる, 加わる «on» ; (投資の点で) 【人に】協力する «with»

e.g. that's where Jack comes in

e.g. I agreed to come in on the project.

have a useful role or function:

〈物･知識などが〉役に立つ

e.g. this is where grammar comes in.

prove to have a specified good quality:

〈結果が〉…となる, 〈計画･契約などが〉…という結果になる (!副詞句を伴って)

e.g. the money came in handy for treating his cronies at the tavern.

2. finish a race in a specified position:

〖序数を伴って〗〘スポーツ〙 (競争などで)…位になる; 〖副詞を伴って〗…の成績である

e.g. the favorite came in first.

3. (of money) be earned or received regularly.

〈お金･仕事などが〉入ってくる(→ income)

4. in imperative begin speaking or make contact, especially in radio communication:

〖命令文で〗(無線で相手のメッセージを促して)どうぞ

e.g. come in, London.

5. (of a tide) rise; flow.

〈潮･海が〉満ちてくる(↔ go out; → incoming形容詞)