慢速英语:Rocket Explosion Hurts Facebook’s Internet Plans for Africa

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1. explode vi. 爆[突]发，发怒; 激增
例句：They were clearing up when the second bomb exploded
他们正在清理时，第二颗炸弹爆炸了。

2. afford vt.提供; 买得起; 担负得起
例句：My parents can't even afford a new refrigerator
我父母甚至买不起一台新冰箱。

3. expand vt.扩张; 使…变大; 详述
例句：Engineers noticed that the pipes were not expanding as expected
工程师注意到管道并没有如预期那样膨胀。

4. announce vt. 宣布; 述说; 声称
例句：He will announce tonight that he is resigning from office
他将于今晚宣布辞职。

5. 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。