vi.

1. 協調，和諧[（+with）]
   The colors of your coat, hat and muffler should harmonize.

   你外套、帽子和圍巾的色彩應該協調。

2. 以和聲唱（或演奏）

vt.

1. 使協調；使和諧
2. 以和聲唱（或演奏）
   The singing teacher taught them to harmonize the new song.

   聲樂老師教他們用和聲唱那首新歌。

v.

1. provide harmony for.
   ▸sing or play in harmony.
2. make or be harmonious or in agreement.
   ▸make consistent:

   plans to harmonize the railways of Europe.