柯林斯词典sputum /ˈspjuːtəm/ 1. N-UNCOUNT Sputum is the wet substance which is coughed up from someone's lungs. 痰[医学] 返回 sputum剑桥词典liquid from the passages in your body that go to the lungs 痰 比较phlegm 返回 sputum