sharpen (something) up
phrasal verb with sharpen verb [ T ] uk/ˈʃɑː.pən/ us/ˈʃɑːr.pən/
改进；改善
to perform better, or to improve the performance of something
If the company doesn't sharpen up soon, it will go out of business. 如果这家公司不马上改进的话，就会歇业倒闭的。