spit mark

例句：

1. 1.The doctor gave him a sputum mark as a reminder to stay home and rest.
   医生给他一个吐痰标记，提醒他在家休息。
2. 2. The patient was given a sputum mark on his arm to indicate that he had been in contact with someone who had the virus.
   病人的手臂上被贴上了吐痰标记，以表明他接触过病毒携带者。
3. 3. The nurse checked the sputum mark on the patient's arm before administering the medication.
   护士在给病人用药前检查了病人手臂上的吐痰标记。