narrow

vt.

1. 使變窄
2. 限制；縮小（範圍等）[（+down）]
   The scholar narrowed his interest to Tang poetry.

   這位學者的興趣局限於唐詩。

vi.

1. 變窄；收縮；減少
   The river narrows at this point.

   河面到了這兒變得很狹窄。