形容詞 historic:

1. belonging to the past; of what is important or famous in the past
   同義詞：historical
2. important in history

1. The historic strike gave an enormous impetus to the whole American labor movement.
   這次歷史性的罷工對(duì)整個(gè)美國(guó)的勞工運(yùn)動(dòng)起了很大的推動(dòng)作用。
2. The small symbols on this map denote historic places and museums.
   這個(gè)地圖上的小記號(hào)表示史跡興博物館。
3. This battle is of historic meaning.
   這一戰(zhàn)具有歷史意義。

his.tor.ic

adj.（形容詞）
Having importance in or influence on history.
在歷史上重要的，有歷史影響的
Historical.
歷史的，歷史上的

Historic and historical are differentiated in usage, though their senses overlap.Historic refers to what is important in history:
Historic 和 historical 盡管在意義上有重疊的地方， 但用法上有區(qū)別。Historic 指歷史上有重要意義的：
例句：
the historic first voyage to outer space.
具有歷史意義的首次太空旅行。

It is also used of what is famous or interesting because of its association with persons or events in history:
而且也用于形容那些因與歷史事件或人物有聯(lián)系而有名或有趣的事物：
例句：
a historic house.
故居。

Historicalrefers to whatever existed in the past, whether regarded as important or not:
Historical是指不管重要與否而在過(guò)去存在的所有事物：
例句：
a historical character.
歷史人物。

Historicalrefers also to anything concerned with history or the study of the past:
Historical也指與歷史或?qū)^(guò)去的研究有關(guān)的事物：
例句：
a historical novel;
歷史小說(shuō)；

例句：
historical discoveries.
歷史發(fā)現(xiàn)。

The differentiation between the words is not complete.They are often used interchangeably:historic times or historical times.
但這兩個(gè)詞并不是截然不同的。它們經(jīng)常可換用：historic times 或 historical times