天大的事 meaning in English

important or serious matters

I want you to feel there's nothing you can't come and talk to me about .
我要你们知道，不管什么天大的事都可以来找我谈。
It ' s not a big big thing if u leave me
即使你离开我,那也不是件天大的事。
The da comes to see me at the beginning of summer , and tells me the sky is falling
夏季一开始地方检察署的人就来找我说出了天大的事
Winnie : you should have heard the big fuss they made when their baby swallowed one dollar
你真应该听听当他们的小贝比就吞了一块钱而已,他们竟然当成是个天大的事来看