n.分類；類別
There is a hierarchy in the classification of all living creatures. 一切生物均可按等級分類。
It is helpful to begin with a rough and ready classification. 首先進(jìn)行粗略的分類是很有幫助的。
Such classification tends to detract from generality. 這樣的分類方法缺乏概括性。
These things belong in a different classification. 這些東西屬于不同的類別。
