Jetpack
喷气发动机组件
🗣️ 情景例句
I was quite surprised when I read in your letter that you had decided not to finish your studies at the university.
当我在你的信中看到你已决定终止大学学业时感到很是惊讶。
The day has eyes, the night has ears.
日有眼，夜有耳。
Please proceed with your presentation.
请开始你的简报。