content = extract_text(soup.select_one("article")) or extract_text(soup.select_one(".content"))
貝爾天生沒有子宮，也沒有月經，但她擁有正常的卵巢——這種狀況稱為「MRKH症候群」（又稱苗勒管發育不全），在英國約每5,000名女性中就有一人患上這症狀。
。业内人士推荐快连下载安装作为进阶阅读
This time, before we perturb the input image, we take the value given by the threshold matrix and divide it by , where is the number of levels for each colour component. As a result, each pixel is perturbed just enough to cover the minimal distance between two colours in the palette. Since the entire palette is evenly distributed across colour space, we only need to modify the range of perturbation along each axis. The dithering equation then becomes:
In 2011, hackers successfully cracked the main Linux development site, kernel.org. Afterward, to make sure this didn't happen again, the kernel's PGP web of trust was explicitly "bootstrapped" at a face-to-face key‑signing session during the 2011 Kernel Summit.