a. 掺入次级品的

[ adj ]
mixed with impurities
<adj.all>

Adulterate \A*dul"ter*ate\, v. t. [imp. & p. p. {Adulterated};
p. pr. & vb. n. {Adulterating}.] [L. adulteratus, p. p. of
adulterare, fr. adulter adulterer, prob. fr. ad + alter
other, properly one who approaches another on account of
unlawful love. Cf. {Advoutry}.]
1. To defile by adultery. [Obs.] --Milton.

2. To corrupt, debase, or make impure by an admixture of a
foreign or a baser substance; as, to adulterate food,
drink, drugs, coin, etc.

The present war has . . . adulterated our tongue
with strange words. --Spectator.

Syn: To corrupt; defile; debase; contaminate; vitiate;
sophisticate.

adulterated \adulterated\ adj.
1. having been made impure by addition of inferior
ingredients; -- said of substances or foods

Note: used ususally of articles of commerce, dulted with less
costly materials so as to enhance profit; -- usually
imlying that the dilution is surreptitious and
unethical

Syn: adulterate, debased
[WordNet 1.5]