80.The Native Americans of northernCalifornia were highly skilled at basketry，using the reeds，grasses，barks，and rootsthey found around them to fashion articles of all sorts and sizes—not only trays，containers，and cooking pots，but hats，boats，fish traps，baby carriers，and ceremonial objects．

(fashion制作)

加利福尼亚北部的美国土著人非常擅长编织工艺，他们用在周围找到的芦苇、野草、树皮和树根来制作各种类型和大小的物件，不仅有盘子、容器和饭锅，还有帽子、小船、鱼钩、婴儿篮和仪式用品。

分析：

主句：The NativeAmericans of northern California were highly skilled at basketry

从句1：using the reeds…to fashion articles of all sortsand sizes

从句2：they found around them

从句3：—not only trays，containers，and cooking pots，but hats，boats，fish traps，baby carriers，and ceremonial objects．

从句3修饰从句1中的articles of all sorts and sizes

从句2修饰从句1中的reeds，grasses，barks，and roots

从句1修饰主句整句