单词	nanogram
释义	nan·o·gram (nănə-grăm′) n. Abbr. ng One billionth (10-9) of a gram.
随便看	Pinsk pinstripe pin stripe pinstriped pint pinta pintail Pinter Pinteresque pintle pinto pinto bean pintsize pintsized pinup pinwale pinweed pinwheel pinworm pinwrench pinx. pinxter flower piny Pinyin pinyon

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