be cruel to

• " you excel so much in the dance , miss eliza , that it is cruel to deny me the happiness of seeing you ; and though this gentleman dislikes the amusement in general , he can have no objection , i am sure , to oblige us for one half hour .
  “伊丽莎小姐，你跳舞跳得那么高明，可是却不肯让我享享眼福，看你跳一场，这未免太说不过去了吧。再说，这位先生虽说平常并不喜欢这种娱乐，可是要他赏我们半个钟头的脸，我相信他也不会不肯的。 ”