He needed emergency surgery to remove a blood clot from his brain.
他需要进行紧急手术以清除脑部的一处血块。
Upper gastrointestinal endoscopy reealed an ulcerated tumor in the gastric antrum covered a clot ( Figure A ).
胃镜示胃窦部见一溃疡形成、表面覆血枷的肿块 ( 见图 ).
简答网 · 英语词汇