spit ring

例句：

1. 1. The childwas so sick that he couldn'teven spit without vomiting.
   那孩子病得很厉害，连吐痰都会呕吐。
2. 2. The doctor gave him a spitring as a precautionary measure.
   医生给他一个呕吐环作为预防措施。
3. 3. The patient hadto wear a spit ring to preventany further vomiting.
   病人必须戴上呕吐环以防止再次呕吐。