unwrapp

children excitedly unwrapping and playing with their new presents.

兴奋地打包装玩起新礼物的孩。

The children unwrapped their Christmas presents with delight.

孩兴地把圣诞礼物拆。

And trigonometrical function table checking method is referenced to reduce large arithmetic amount in the unwrapping process.

并用三角函数查表法减少过程的运算量。