Combination tones
[电] 合音
🧩 词语组成解析
n. 声调；基本音色（tone的复数）
🗣️ 情景例句
I can only stay a few minutes.
我只能停留几分钟。
He is the top condition.
他的身体情况处在巅峰状态。
But so far, the public has expressed its gratitude to the students in letters to the Press.
但到目前为止，公众已经向新闻界写信表达他们对学生们的感激之情了。