以下是一些情境:
1. She has a visitor at the moment. 她现在有客人。
2. He is in a meeting now. 他正在开会。
3. I'm sorry, but he is unable to come to the phone now.很抱歉,他现在无法接电话。
4. I'm sorry, but I was just on my way out. Can I get back to you later? 很抱歉,我正好要出门。可不可以稍后再打给你。
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