He was bleeding profusely.

他当时在大量出血。

《柯林斯英汉双解大词典》

This proposal won't help the young woman with a rare blood type, knocked over by a car, bleeding profusely. This won't help the thousands of anaemic cancer sufferers needing a blood transfusion.

这条规定帮不到遭遇车祸，大量失血，却持有罕见血型的女子，帮不到成百上千需要输血疗法的贫血性癌症患者。

youdao

As an er doctor, the first thing I think of is how the scalp can bleed very easily and profusely and thankfully, the hook was controlling the bleeding where it was stuck.

作为一个急诊室医生，我想的第一件事是如何控制头皮的大出血，令人高兴的是，鱼钩正好控制住了出血点。

youdao

One of the rhinos was found dead, while the other was found bleeding profusely.

BBC: India probes attacks on rhinos in Assam state

Drake tried to put pressure on the wound, and when he lifted his hands, Wise was bleeding profusely.

WSJ: SC soldier gets nearly 12 years in fatal shooting

Edward was hit on the head with a scaffold pole and taken upstairs while bleeding profusely, the court heard.

BBC: Jail for violent robbery at brothers' Langford farm