1. Understanding: I know the skills/technologies of xxxx. \ x0d \ 2。 I know all the skills/technologies of xxxx. \ x0d \ 3。 Master (Offline): I have mastered the skills/technology of XXXX. \x0d\ x0d \ skill (skill): used for general skill \ x0d \ technology: used for science or computer \x0d\ x0d \ In terms of intensity, "understanding" is not as good as "familiarity". \ x0d \ x0d \ Americans have five skills when applying for a job, but they brag about ten; Therefore, even if they only understand or know what level, they will use master in their resumes. \x0d\ China people's insurance, five points, often only three points, is very unfavorable for job hunting. If you are really sure about XX technology, use master. This will be at least on the same level as competitors.