词汇	船首尾
释义	船首尾 fore-and-aft
随便看	nonnegativities nonnegativity non-negativity nonnegativity condition nonnegativity conditions nonnegativity constraint nonnegativity constraints nonnegativity of function nonnegativity restriction nonnegativity restrictions nonnegatrive matrix nonneglected nonnegligent nonnegligent manslaughter nonnegligible non-negligible nonneglobulin test Nonneglobulin test nonnegnative set integer non-negotiabel non-negotiability nonnegotiable non negotiable non-negotiable non negotiable bill