手表上十二月份的英文简写是Dec.
December 英[dɪˈsembə(r)] 美[dɪˈsɛmbɚ]
n. 12月;
[例句]Her baby was born on 4th December
她的孩子是12月4号出生的。
[其他] 复数：Decembers
英语十二个月份的简写如下：
January - Jan. 2 . February - Feb.3. March - Mar. 4. April - Apr.5. May - May 6. June - Jun.7. July - Jul. 8. August - Aug.9. September - Sep. 或者 Sept. 10. October - Oct.11. November - Nov. 12. December - Dec.