furniture是可數還是不可數

例句：

We'll want more furniture for the new office.

我們的新辦公室需要添些傢俱。

How can we make room for all the furniture?

我們怎麼騰得出地方放這些傢俱呢？

We need to buy some new furniture.

我們需要買一些新傢俱。

Modern furniture is a little too severe for my taste.

現代傢俱有點過於簡樸，我不大喜歡。

I worked there so long that I became part of the furniture.

我在那裏工作得太久，都不為人注意了。