词汇	地球火星飞行轨道
释义	地球火星飞行轨道 earth-Mars trajectory
随便看	national hotels National Hot Rod Association national housing act National Housing Administration national housing and homelessness network National Housing Association National Human Genome Research Institute national income at market price national income data national income deflator national income difference national income distribution national humiliation national hunt National Hurricane Center National Hurricane Centre National Hurricane Research Project National Hygienic City National Hypertension Association national icome national ID card national ID cards National idea national identification national identify