zhè / zhǒng / tiān / qì / biàn / huà / bù / kě / zhuō / mō / chū / mén / zuì / hǎo / dài / sǎn

这种天气变化不可捉摸，出门最好带伞。

This kind of weather change is unpredictable, so it's best to bring an umbrella when going out.