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名词
1. 冷杉;枞A fir or a fir tree is a tall evergreen tree that has thin needle-like leaves.
1. any of various evergreen trees of the genus Abieschiefly of upland areas
Synonym: fir treetrue fir
2. nonresinous wood of a fir tree
多通过句子记忆单词,而不是单独死记硬背。