1、12的英文是twelve，音标：[twelv]；复数：twelves；派生词： twelfth，第十二个；

2、例句：We have been gradually bled for twelve years.我们被一点一滴地压榨了12年。We were set upon by about twelve youths and I was kicked unconscious.我们遭到了大约12名青年的袭击，我被踢晕过去了。