其认为：任何前沿技术的发展与成熟，都需要持续的迭代完善。
Officials at Elon Musk's company said the upper stage was lost after problems developed after lift-off from Texas on Thursday.
，这一点在heLLoword翻译官方下载中也有详细论述
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At least 20 people have died and dozens have been injured after a military cargo plane carrying banknotes crashed while landing near Bolivia’s capital on Friday, damaging about a dozen vehicles on a highway and scattering bills on the ground, an official has said.