be deliberately planned over a long period of time; hope (/intend) for a long time;long premeditated
❍ 那桩政治事件～。The political incident had been deliberately planned over a long period of time.
蓄谋已久xù móu yǐ jiǔ
蓄：等待；谋：谋划。形容对某件事情等待、谋划了很长的时间。long premeditated, hope for a long time, intend for a long time