单词	dumb-bell nebula
释义	dumb-bell nebula 哑铃星云
随便看	first port of call First Port of Entry first ports of call first principles calculation first-principles calculation first-phase first-phase in east line first-phase in Guilin first phase of acute myocardial infarction first phase of PIP First Phase of Server Migration Over! first phase of the vault First-phase planning and preparations first phase preparation first-phase preparation first-phase preparations First phase project first-phase project first phase reaction first-phase reaction first-phases first phase sample first-phase work first philosophy First physics class