这座城堡在历史上曾是许多重要战役的发生地。

This castle is ___historically important as the site of many major battles.

历史上，这个家族世代以捕鱼为生。

___Historically, this family has made a living by fishing for generations.

历史上，这个地区很少下雨，但现在降雨量明显增加了。

___Historically, this area received little rainfall, but now the precipitation has significantly increased.