1)On the contrary,it was very easy to understand.,相反，这事儿很容易理解。2)This is fairly easy to do.,这是很容易的事。3)This can be easily explained.,这很容易解释。4)This medicine is very effective.,这药很管事儿。5)This book is read very easily.,这本书很容易读。6)The belt buckled up easily.,这带子很容易扣。