vt.

1. 改進，改善；增進
   He put forward a plan for improving the rate of production.

   他提出了一個提高生產率的計畫。

2. 提高（土地，地產）的價值
3. 利用（機會等）
   She improved her leisure by learning foreign languages.

   她利用閒暇時間學習外語。

vi.

1. 改善，變得更好
   Their working conditions are improving.

   他們的工作條件正在改善。

2. 增加，提高
   The price of steel improved.

   鋼材價格提高了。

v.

1. make or become better.
   ▸ (improve on/upon) achieve or produce something better than.
2. [as adj. improving] giving moral or intellectual benefit.