Present difficulty
引起困难
🧩 词语组成解析
🗣️ 情景例句
What's the nature of the problem?
是什么样的问题？
He is playing on the swings outside.
他正在外面荡秋千。
In his youth, his father and grandfather often told him stories about their family history.
年轻时，他的父亲和祖父常常同他说起他们的家史。