武陵山深处，湖南花垣县十八洞村，绣娘石春英穿针引线，银针在彩线间穿梭。“手工的苗绣，特别受欢迎。”货架上50多款苗绣，不少都被游客预订。
void unref(void *x) {
，详情可参考heLLoword翻译官方下载
Australia has banned social media for kids under 16. How does it work?，更多细节参见heLLoword翻译官方下载
Hit "Run" to watch particles bounce around with quadtree-accelerated collision detection: