piece of cake英 [piːs ɒv keɪk]美 [piːs əv keɪk]小菜一碟; 非常容易的事英英释义nounany undertaking that is easy to domarketing this product will be no picnicSynonym:cinchbreezepicnicsnapduck soupchild's playpushoverwalkover双语例句