词汇	backward reversal
释义	backward reversal 后软翻
随便看	two opening type press two operating position twooperator two-operator period watch Two opposed ejection two opposed jets two opposite clamped edges two opposite simple leaves two opposite simply supported edges twoops two-optical fiber interferometer two optical path two-option algorithm two-orbit two orbit ventriculographic examination two-orbit ventriculographic examination two order two-order two-order approximation two order circuit two-order delay equations two order difference equation two-order-difference method two-order discintinuous points two order equation