Yabla Chinese

Yabla video uses of 变天
嗯？ en?
我 wǒ
不 bù
知道 zhīdào
今天 jīntiān
会 huì
变天 biàntiān
What? -I didn't know that the weather would suddenly change.
我 wǒ
估计 gūjì
啊 a
这 zhè
两天 liǎngtiān
要 yào
变天 biàntiān
儿 r
I'm suspecting the weather is going to change these days