名詞 pms:

1. a syndrome that occurs in many women from 2 to 14 days before the onset of menstruation
   同義詞：premenstrual syndrome

名詞 pm:

1. an examination and dissection of a dead body to determine cause of death or the changes produced by disease
   同義詞：autopsy, necropsy, postmortem, post-mortem, PM, postmortem examination, post-mortem examination
2. a soft silvery metallic element of the rare earth group having no stable isotope; was discovered in radioactive form as a fission product of uranium
   同義詞：promethium, Pm, atomic number 61
3. the person who holds the position of head of the government in England
   同義詞：Prime Minister, PM, premier
4. modulation of the phase of the carrier wave
   同義詞：phase modulation, PM

1. The House (ie Members of the House of Commons) rose at 10 pm.
   下議院已於晚上10點(diǎn)鐘散會。

PMS
abbr.（略語）
Premenstrual syndrome.
Premenstrual syndrome.