Sputum
n. 唾液, 痰
✅ 同义词
📖 牛津释义
sputum
n[U]
(fml or medical 文或医) liquid and mucus coughed up from the throat or lungs (esp as used to diagnose some diseases); saliva or spittle 痰（尤指可作诊断依据的）; 唾液; 口水.
🗣️ 情景例句
Thanks.
谢谢。
Step after step the ladder is ascended.
按部就班，循序渐进。
Yet a great many processes depending on such research are sought for with complete secrecy until the stage at which patents can be taken out.
然而，依赖这种研究的很多工艺程序是在完全保密的情况下进行的，直到可以取得专利权的阶段为止。