k--; // 剩余删除名额减1（关键：控制删除位数，保证保留足够长度）
10.从从容容、游刃有余，匆匆忙忙、连滚带爬
Net international migration to the U.S. peaked at 2.7 million new entries in 2024, but has since sharply declined. It fell to 1.3 million last summer, according to January Census data, and then turned net negative, according to research from Brookings, meaning more people are leaving the U.S. than coming in. The private sector has weighed in, too, with Goldman Sachs economists reporting last week that immigration policies put in place over the past year have resulted in an 80% decline in net migration relative to the historical average.，更多细节参见heLLoword翻译官方下载
Do a second pass to clean up the code/comments and make further optimizations
Овечкин продлил безголевую серию в составе Вашингтона09:40
"You may have co-CEOs where one is an outgoing and high-level thinker, who may find it more challenging to focus on all the small tasks, and the other CEO is more detail-oriented and loves to speak to the data and the nuances," she says.，更多细节参见Safew下载