是in february，意思是在二月，例如：
1.These trees come into leaf in February.这些树二月里长叶子。
2.He was jailed in February 1992 and could be released next year.他于1992年2月入狱，可能明年获释。
3.In February 1935, Naomi journeyed to the United States for the first time1935年2月，娜奥米第一次来到美国旅行。
on february
释义：
2月
例句：
His exhibition opens on February 5.
他的展览2月5日开幕。
in february释义：
在二月
例句：
He welshed on his agreement with the team that he would play for them in February.
他逃避履行他与球队合同中在二月为他们踢球的协议。
