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be a heartbreaker
多指感情中迷人但不可靠的人，常带戏谑或无奈的语气。
He was a heartbreaker in college, dating someone new every month.
他在大学时是个负心人，每个月都换新女友。
负心人；令人心碎的人
heartbreakers — plural of heartbreaker
先理解核心含义，再看它在真实句子里的用法。
负心人；令人心碎的人
a charming person who is irresponsible in emotional relationships
He was a heartbreaker in college, dating someone new every month.
他在大学时是个负心人，每个月都换新女友。
令人伤悲的人[事物]；[戏谑语](女人的)一绺卷发; 权志龙solo专辑名
n. a charming person who is irresponsible in emotional relationships；n. a narrow defeat or a defeat at the last minute
He's a real heartbreaker; he dates three women at once and never commits.
他是个真正令人心碎的人；他同时和三个女人约会，却从不承诺。
Everyone in the office knew Tom was a heartbreaker, so no one was surprised when he made his girlfriend cry.
办公室里的人都知道汤姆是个负心人，所以看到他让女朋友哭时，没人感到惊讶。
I should have listened to my sister's warning that he is a heartbreaker, because now I'm the one crying alone.
我本该听姐姐的警告，说他是个令人心碎的人，因为现在独自哭泣的人是我。
多指感情中迷人但不可靠的人，常带戏谑或无奈的语气。
He was a heartbreaker in college, dating someone new every month.
他在大学时是个负心人，每个月都换新女友。
多用于体育或比赛语境，指最后时刻惨遭逆转的惜败。
They lost a heartbreaker in the final minute.
他们在最后一分钟惜败。
Not this
She is heartbreaker.
Use this
She is a heartbreaker.
heartbreaker 是可数名词，单独作表语时前面需要冠词 a；中文说“她是负心人”时，英文要补上冠词。
Not this
She is my heartbreak.
Use this
She is my heartbreaker.
heartbreak 指“心碎、伤心”这种感受，heartbreaker 才指“令人心碎的人”。想表达“让我伤心的人”要用 heartbreaker。
Not this
He was a heartbreaker after his girlfriend left him.
Use this
He was heartbroken after his girlfriend left him.
heartbreaker 指“让别人心碎的人”，heartbroken 指“自己心碎的”。这里说的是他自己难过，应该用形容词 heartbroken，而不是名词 heartbreaker。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
一个十足的负心人；真正让人心碎的人
He's charming but a real heartbreaker—he never calls back.
他很有魅力，但真是个负心人——从不回电话。
有点儿让人心碎的人
She's a bit of a heartbreaker, but we love her.
她有点儿让人心碎，但我们还是爱她。
最后时刻的惜败
It was a last-minute heartbreaker for the visiting team.
对客队来说，这是一场最后时刻的惜败。
一场令人心碎的失利
Game 7 was a heartbreaker of a loss for the home team.
第7场比赛对主队来说是一场令人心碎的失利。
遭遇令人心碎的失利
They suffered a heartbreaker when the last-second shot missed.
最后一秒的投篮偏出，他们遭遇了一场令人心碎的失利。
嘿，负心人，你要去哪儿？
He seemed perfect at first, but he turned out to be a heartbreaker who never called again.
一开始他看起来完美，但后来发现他是个从不回电话的负心人。
你是个负心人。
She's not a heartbreaker; she just hasn't found the right person yet.
她不是负心人，只是还没遇到对的人。
Use heartbreakers naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
Heart（心）＋ breaker（打碎者）→ 打碎别人的心的人＝负心人；也指让人心碎的惜败。
语域：informal 常见场景：romantic relationships and gossip、sports commentary and headlines heartbreaker 通常用于非正式场合，比较口语化。指‘令人心碎的人’时，多出现在恋爱、八卦或文艺作品里；指‘惜败／最后时刻的失利’时，多见于体育新闻和赛事评论。正式写作中一般不这样用，可改用更正式的说法。
这些词都以 -breaker 结尾，读音均含 /breɪkə/，与 heartbreaker 的后半部分相同；注意 heart 中的 ear 读 /ɑː/，不要按 hear /hɪə/ 来读。
Dictionary facts from ECDICT, WIKTIONARY.