翻译：我们难以理解“无条件的爱”意味着什么。
We are hard fathoming the love is unconditional mean what.
参考翻译：What 's unconditional love' truly means is hard to fathom. 或者 It's hard to fathom what it means to love someone unconditionally.
作为动词：表示深入理解，绞尽脑汁也很难理解
难以看透某人或某事也可以直接说
“I can’t fathom him/her/it”
