Gb	Eng
他和我有过两次约会，但两次他都失约了。	He had two appointments with me, but let me down on both occasions.
我一整天都在家里等候你们的电视修理员来取电视机，但他失约了。	I've been waiting in all day for your television repair man to collect the set, but he didn't come as he promised.