【句子】
The pigmentation of a pearl is influenced by the type of oyster in which it develops and by the depth, temperature, and the salt content of the wate r in which the oyster lives.
珍珠的色泽受到作为其母体牡蛎种类及牡蛎生活水域的深度，温度和含盐度的制约。
【解析】
1.pigmen tation
n.染色；着色；色素沉淀
The doctor said permanent dermal pigmentation is a form of microsurgery.
医生说永久的皮肤染色是一种显微手术。
2.oyster
n. 牡蛎；蚝
oyste r is the only seafood I like; I dislike the rest.
拐弯之前别忘记指示车行方向。
3.content的三种主要用法
1)用作名词
