Keys
n. 关键帧；（钢琴等的）键；密钥（key的复数）
🗣️ 情景例句
Very good. But, unless I miss my guess, you should say something about your family, too.
非常好，但是我除非我想错了，不然你应该谈谈你的家庭。
Do you often study history on Saturday?
你常常在星期六学历史吗？
A young man and a young woman were sitting behind me.
一青年男子与一青年女子坐在我的身后，