Jetpack
喷气发动机组件
🗣️ 情景例句
Her boyfriend couldn't provide her with a sense of security.
她的男朋友无法给予她安全感。
Would you mind closing the window for me?
能帮我关一下窗户吗？（你介意关下窗户吗？）
Can you tell me why our bid was not accepted?
请告诉我为什么我们没有得标好吗？