(As an aside, should schools encourage students to use “standard” English? Maybe not, since it’s unfair for society to reward people for growing up in higher-class homes. Or maybe so, since—unfair or not—if that’s the reality, it benefits the individual student to adapt to it.)
В Тегеране пролились нефтяные дожди и предупредили о кислотных14:17
。业内人士推荐新收录的资料作为进阶阅读
Мощный удар Израиля по Ирану попал на видео09:41。新收录的资料是该领域的重要参考
The sale includes a significant slice of Borders countryside。新收录的资料对此有专业解读
描述：给定字符串 num（非负整数）和整数 k，移除 k 位数字，使剩余数字最小。以字符串形式返回（不含前导零）。