n. 
道掘进机
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burdock,
burdock-seed,
burdon,
Burdorite,
bure,
bureau,
bureau of the census,
bureaucracy,
bureaucrat,
bureaucratese,
相似单词
dinoxanthin,
DINP,
di-n-propylamine,
DINS,
dint,
dintheader,
dinting,
dinuclear,
dinucleon,
dinucleotide,