introduction可數嗎?

Introduction用法例句

camera has undergone only two minor tweaks since its introduction.

這款相機自推出以來僅進行過兩次小的改進。

ions of words have been written about the introduction of the euro.

有關採用歐元的文章數不勝數。

3.I tutored a two-day Introduction to Chairmaking course at the college.

我在那個學院教過為期兩天的'椅子製作入門課。

4.A prolonged drought had necessitated the introduction of water rationing.

由於持續乾旱，有必要對用水實行配給了。

introduction of student loans

學生貸款的推行