to put in time and energy
下工夫就会了。
You are able to do it only if you put in the time and effort.
为了把技术学好，要下工夫
to achieve technical skills one must put in the time and effort
汉译英翻译词典收录86165条汉英翻译词条，基本涵盖了全部常用中文字词的英语拼写、翻译、音标、读音、用法、例句等，是英语学习的有利工具。