"they shouted `Yes!' in unison"
"they responded in chorus to the teacher's questions"
"they sang in unison"
《柯林斯英汉双解大词典》
《柯林斯英汉双解大词典》
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao