Septieme
七倍音
🗣️ 情景例句
Keep a small English dictionary with you at all time.
随身携带一本小英文字典。
That's a good idea.
好主意。
Sure enough, Rastus arrived punctually at seven o'clock that evening.
果然，当天晚上7点正，拉斯特斯准时回来了。