Be made of VS be made from 由…製成

Be made of  VS  be made from  由…製成

The artificial joint may be made of metal, ceramic(陶瓷的) plastic, or a composite of these materials.

Be made of 和be made from 的差別:

(A)   be made of 由…製成(成品保留材料原來的性質)

ex The desk is made of wood .

這張書桌是木頭做的。

ex The necklace is made of gold.

這條項鍊是黃金做的。

(B)   be made from 由…製成(成品不保留材料原來的性質)

ex The wine is made from grapes.

這酒是葡萄做的。

ex Cheese is made from milk.

乳酪是牛奶做的。