n.海鳥糞（用作肥料）
The cave floor is covered in guano. 洞穴地底覆蓋了滿滿的鳥糞。
The canyon walls are lined with giant nests and guano. 峽谷壁上到處是巨大的鳥身人巢穴和鳥糞。
Guano means droppings from seabirds which are used as a sort of fertilizer. 鳥糞層就是海鳥的糞便，可以用作肥料。
n.禽龍
