Intrasonic
超低頻
??? 情景例句
What do you often eat for supper?
你晚飯通常吃什么？
Speak of the devil.
我們才剛好聊到你而已。
Young people love this time of year, because it is good for sports.
年輕人喜愛這個時節，因為它適合體育運動。