In such a fast-changing business, it's hard to stay on top.
在一个变化如此迅速的行业里，要保持显要地位很难。
《柯林斯英汉双解大词典》
2
This top-down conception of the fashion business couldn't be more out of date or at odds with the feverish world described in Overdressed, Elizabeth Cline's three-year indictment of "fast fashion".
Running on solar power gathered from its rooftop supplemented with grid energy, the "Fast Bus" is expected to top out just shy of 40 miles per hour, so it's not ideal for long treks.