deal with someone or something very carefully or tactfully
审慎周到（或机智巧妙）地待人处事
(informal)a thing regarded as childishly simple or naive
(非正式)稚气（或天真）的事情；小儿科
all this was kids' stuff though compared to the directing.
可是同指挥比较起来这都是小儿科。
(Brit. informal)one's younger brother or sister (often used as a form of address)
(英，非正式)小弟弟，小妹妹（常用作称谓）
come here, our kid.
小弟弟，过来。
used to emphasize the truth of a statement
（用以强调陈述的真实性）不开玩笑，说真的
no kidding, she's gone.
说真的，她走了。