抓住大好时机: never neglect an opportunity for improvement
有利: advantageous; beneficial; favourable 短语和例子有利于集体 advantageous to the collective; 有利于健康 beneficial to health; 有利于改进领导作风 help improve the style of leadership; 有利的机遇 good opportunity; opportun
对有利: in one's favour(=to one's advantage)to the advantage of sb