形容詞 patchy:

1. irregular or uneven in quality, texture, etc.

1. My knowledge of science is patchy.
   我的科學知識只是一鱗半爪。
2. A horse with patchy markings of white and another color.
   雜色馬，花馬一匹有白色或另外一種色斑的馬

patch.y

adj.（形容詞）
patch.i.er,patch.i.est
Made up of or marked by patches:
補綴成的，有補釘?shù)模?/br>例句：
patchy trousers.
帶補釘?shù)难澴?/br>
Uneven in quality or performance:
雜湊的，不調(diào)和的：質(zhì)量或表演不調(diào)和的：
例句：
Their work is patchy at best.
他們的工作最好也是亂糟糟的

【引伸】
patch.ily
adv.（副詞）
patch.iness
n.（名詞）