be child's play
US /bi ˈtʃaɪldz pleɪ/
UK /bi ˈtʃaɪldz pleɪ/

成语
1.
是小菜一碟, 非常容易
to be very easy to do
示例:
•
For an experienced programmer, writing this code will be child's play.
对于经验丰富的程序员来说,编写这段代码将是小菜一碟。
•
After all the difficult training, the actual competition will be child's play.
经过所有艰苦的训练,实际的比赛将是小菜一碟。
在 Lingoland 学习这个单词