HSK 5
难以
nányǐ动
hard to (predict, imagine etc)
这个变化令人难以相信。
Zhè ge biàn huà lìng rén nán yǐ xiāng xìn.
This change is hard to believe.
Say it
Hold the button, say it, then let go.
Other HSK words sharing a character
Also free:
New in the HSK 3.0 word list at level 5.