| 单词 | PM |
| 释义 | PM abbr. 1. particulate matter 2. past master 3. police magistrate 4. also PM or pm post meridiem 5. a. postmaster b. postmistress 6. postmortem 7. prime minister 8. provost marshal Usage Note: By convention, 12 AM denotes midnight and 12 PM denotes noon. Because of the potential for confusion, it is advisable to use 12 noon and 12 midnight. |
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