慢速英语:Dubai to Launch Self-Flying Air Taxi by July

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1. launch vt.发射; 发动
例句：NASA plans to launch a satellite to study cosmic rays
美国国家航空航天局计划发射一颗卫星上天，对宇宙射线进行研究。

2. design vt.设计; 绘制
例句：They wanted to design a machine that was both attractive and practical.
他们想设计一种既美观又实用的机械。

3. operate vt.操作; 经营; 运转
例句：The doctors decided to operate on the patient once.
医生们决定立刻动手术。

4. approval n.批准; 同意; 赞成
例句：The crowd roared their approval.
一群人高喊着他们的口号。

5. propose vt.求婚; 提议，建议
例句：Britain is about to propose changes to some institutions
英国将提议对一些机构进行改革。

6. register vt.登记，注册
例句：It's wise to register letters containing banknotes.
信中夹钞票最好寄挂号。