相关单词同義詞slope, pitch, 近義詞 descent 下降, fall 落下, downslope 下坡, declension 語尾變化, declination 傾斜, decline 下降反義詞acclivity, 曏上的陡坡臨近詞Dec, Decini相似詞declassify, declension, declination, decline, declutter, decoction, decode, decoder, 返回 declivity