really和truly都是副词
really：真正地,确实地,实际上,很,十分,全然.
1.真正地; 确实地; 实际上
Really,that was a terrible mistake.
说真的,那是非常严重的错误.
I see you worrying on my account,but really I don't mind.
我看得出你在为我着急,但其实我并不在意.
I didn't really mean to hurt you.
我真的不是存心得罪你的.
truly；真正地,忠实地,真诚地.
1.真正地
He is a truly good man.
他是个真正的好人.
2.忠实地,真诚地
You must speak truly.
你必须说实话.
l am truly grateful for all your help.
我实在感谢你的帮助.
3.（指描述）确切,准确,精确,确实
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