repeat three times是repeat it for three times的缩写吗?

at three times和for three times一样吗 He has been to Beijing for three times 这里的for three times 是状 for three times repeat this test for 3 times 要不要介词for three times的中文 three times three time和 three times的区别 I have been there( )three times.括号里加for吗 times的缩写是 three times the length 用three times造句 three times a