If something changes substantially or is substantially different, it changes a lot or is very different.
例句
The percentage of girls in engineering has increased substantially...学工科的女孩的比例已经大大增加了。The skin of an eighty-year-old looks substantially different from that of a twenty-year-old...80 岁人的皮肤与 20 岁人的皮肤看起来有天壤之别。
ADV
基本上;大体上;总的来说
If you say that something is substantially correct or unchanged, you mean that it is mostly correct or mostly unchanged.
例句
He checked the details given and found them substantially correct...他核实了一下给出的细节,发现它们基本正确。BBC Television remains otherwise substantially unchanged.而英国广播公司的电视节目在其他方面基本没有变化。
英汉词典释义
adv.
本质上,实质上;大体上
His account of what happened is substantially accurate.他对事情的叙述实质上是准确的。
相当多地,大大地
The price may go up quite substantially.价格可能大大上扬。
英英词典释义
Adverb
1. to a great extent or degree;
"I'm afraid the film was well over budget""painting the room white made it seem considerably (or substantially) larger""the house has fallen considerably in value""the price went up substantially"