本次的年度征文设题很巧妙，体现了现代科技与传统人力对决的意思。
One reason for routinely launching GPS satellites is simply "constellation replenishment," said Col. Andrew Menschner, deputy commander of the Space Force's Space Systems Command. Old satellites degrade and die, and new ones need to go up and replace them. At least 24 GPS satellites are needed for global coverage, and having additional satellites in the fleet can improve navigation precision. Today, there are 31 GPS satellites in operational service, flying more than 12,000 miles (20,000 kilometers) above the Earth.
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Последние новости，这一点在服务器推荐中也有详细论述
Москвичи пожаловались на зловонную квартиру-свалку с телами животных и тараканами18:04