vt.

1. 改變
   Has she altered her mind?

   她改變主意了嗎？

2. 修改
   The tailor altered the jacket to fit me.

   裁縫將夾克修改得合我的身。

   The tailor altered the coat to make it shorter.

   裁縫把大衣改短了。

3. 【俚】閹割，去勢

vi.

1. 改變，變樣
   The city has altered almost out of recognition since I left there five years ago.

   自從五年前我離開以後，那座城市已變得幾乎認不出了。

   alter for the better/worse

   變好/壞

v.

1. change in character, appearance, or composition.
2. N. Amer. & Austral. castrate or spay (a domestic animal).