n. corresponding exactly
n. occurring together or simultaneously
n. (music) two or more sounds or tones at the same pitch or in octaves
n. 调和, 和谐, 一致, 齐唱, 齐奏
a. 共同做的, 同声的
1. The choir sang in unison, creating a beautiful harmony.
合唱团齐声唱歌，创造了美妙的和声。
2. The children shouted in unison when the teacher asked them a question.
当老师问他们一个问题时，孩子们齐声回答。
3. All the team members raised their hands in unison to show agreement.
所有队员齐齐举手表示同意。