- children excitedly unwrapping and playing with their new presents.
兴奋地打开包装玩起了新礼物的孩子们。 - The children unwrapped their Christmas presents with delight.
孩子们高兴地把圣诞礼物拆开。 - And trigonometrical function table checking method is referenced to reduce large arithmetic amount in the unwrapping process.
并使用三角函数查表法减少了展开过程的运算量。
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