单词	P. r. n.
释义	P. r. n. [医] 需要时, 必要时
随便看	dependent demand dependent development dependent differentiation dependent economy dependent economy model dependent element dependent equation dependent equations dependent equatorial coordinates dependent equatorial coordinate system dependent error dependent event dependent events dependent factor dependent failure dependent fault dependent file dependent form dependent function dependent functions dependential dependent invention dependentistas dependent labour dependent learning 地旷人稀地棘天荆地灵人杰地狱变相地瘠民贫地网天罗地老天昏地老天荒地覆天翻地角天涯依克度依凭依前依存依山傍水依归依律依循依恃依恋