What's the big idea? Meaning In Thai (ทำไมถึงทำเช่นนั้น)

What's the (big) idea? - ทำไมถึงทำเช่นนั้น
English	Thai	Transliteration
What's the (big) idea? (Idiomatical expression)	ทำไมถึงทำเช่นนั้น	tam-mai těung tam chên nán

This product is created by the adaptation of LEXiTRONTM developed by NECTEC (http://www.nectec.or.th)

What's the big idea? Thai Translation