单词	一旦…
释义	一旦…phr.once that一旦…（就…）
随便看	network diagnostic control network diagnostic control，ndc network diagnostic tool network diagnostic tool，ndt network diagram network dialogue network diameter network diaphragm network dimensioning network director network director--nd network directory network director，nd network disconnect and reset network disconnect command network disk network-- dissipative matching network distribution network distribution equipment network distributor network domain network drill network drive network driver interface specification network driver interface specifications