At one end, the glasses are marketed as an everyday assistant – a voice in the frame that tells you what you are seeing. At the other end, people in Nairobi sit annotating the most intimate moments the camera captures: open-plan offices, living rooms, bedrooms, bathrooms.
Mostly. This is because, theoretically, we could still save the ISS and move it into higher orbit. NASA has calculated that propelling the station more than 640 kilometers above Earth would keep it alive for 100 years—and also require at least 18.9 metric tons of propellant. That’s roughly 2,000 airline carry-ons. A thousand years would require at least 36 metric tons. If that doesn’t seem like very much, consider the fact that, right now, no vehicle can transport that amount of gas to the station. The still-in-development SpaceX megarocket Starship might be able to haul a significant percentage, but it would struggle to dock with the station, according to the space agency’s estimations.
。关于这个话题，heLLoword翻译官方下载提供了深入分析
unsigned short nl_pad;
} *free_table[32] = {0};
We check for char == 27, and then also check for the next two characters to identify the Left and **Right* arrow keys, and increment/decrement the index of our cursor (making sure to keep it within the input string.