"sob your heart out" in Chinese (Simplified)
痛哭不已哭得很伤心
Definition
因为非常伤心或难过而长时间、强烈地哭泣。
Usage Notes (Chinese (Simplified))
属于非正式、有感情色彩的表达，多指极度悲伤时的剧烈哭泣，不适用于一般的哭泣场合。常见于失恋、收到坏消息等情绪很激烈的情境。
Examples
She sobbed her heart out when her dog died.
她在狗去世时**痛哭不已**。
After the breakup, he sobbed his heart out all night.
分手后，他整夜**痛哭不已**。
The little boy sobbed his heart out when he lost his toy.
小男孩丢了玩具后**哭得很伤心**。
Go ahead and sob your heart out—sometimes you just need to let it all out.
尽管**痛哭不已**吧，有时候发泄出来会好一点。
She locked herself in her room and sobbed her heart out after hearing the bad news.
她听到坏消息后，把自己锁在房间里，**痛哭不已**。
If you feel like you need to sob your heart out, don't hold back.
如果你觉得需要**痛哭不已**，就不要憋着。