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。

關於診斷的句子

診斷

You have a nasty cold.

You're not in the clear yet.

I'm hoping to get to the bottom of this soon.

We'll know more in a few days.

We've ruled out diabetes.

get to the bottom of something的意思

Fig. to get an understanding of the causes of something. We must get to the bottom of this problem immediately. There is clearly something wrong here, and I want to get to the bottom of it.