funnel-shaped depression的用法和樣例：
例句
- Proliferation of cells in a ring around the feather germ creates a cylindrical depression, the follicle, at its base.
環繞羽芽有一圈細胞不斷增生，在基部形成圓柱狀凹陷，稱為毛囊。 - That is largely because greater Santiago is built in a trough-like depression between two mountain ranges, which traps polluted air over the city and prevents its dispersal.
這主要原因是聖地亞哥是建立在槽狀凹陷的兩條山脈間的城市，這是一座陷入空氣污染並要防止其擴散的城市。
