// Step 1: make it inexpensive to `clone` (i.e. using `Rc` or `Arc` if not already cheap)
微软表示，关于此次新硬件及相关更新的更多技术细节，可在官方 Windows 博客的最新公告中进一步了解：
。新收录的资料对此有专业解读
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Lovell, who was also part of the Apollo 8 mission, was the first man to go to the Moon twice - but never actually landed.