Astronauts have handled many maladies over a quarter-century at the space station, but most, such as toothaches and earaches, aren't deadly. Astronauts also have managed minor injuries and infections, back pain, motion sickness, headaches, and vision changes with telemedicine and the onboard medical kit, according to public reports.
if (chunks === null) {
。业内人士推荐快连下载安装作为进阶阅读
next_url = urljoin(BASE, next_a.get("href")) if next_a and next_a.get("href") else ""
优势：时间复杂度O(d*(n+k))，d为位数，适合位数少的整数