be a piece of cake informalto be very easy to do很容易做，是轻而易举的事:•Landing this type of aircraft is a piece of cake for an experienced pilot.对于经验丰富的飞行员来说，驾驶这种飞机着陆轻而易举。be a piece of cake spokento be very easy很容易做到的事:•'How do you do that?' 'It's a piece of cake! Watch!'“你怎么做？”“很简单！ 看着！” |