Mighty is used to describe something that is very large or powerful. 强大的
adjective [原级]强大的,巨大的;(动作)用力的,需用力的
There was a flash and a mighty bang. 一道闪光伴随着一声轰然巨响。
adverb [程度副词]很,非常,十分
Mighty is used in front of adjectives and adverbs to emphasize the quality that they are describing. 非常• It's something you'll be mighty proud of. 这是个你会非常骄傲的事。