1 double

2 twice

3 simultaneous

4 holding two or more (official) posts at the same time

1 to hold concurrent posts

2 concurrent job

3 moonlighting

1 to implement

2 to carry out

1 measure

2 step

3 classifier: 个 gè

1 construction

2 to carry out construction or large-scale repairs

1 to put into practice

2 to carry out (idiom)

1 to go against the tide (idiom); to do things all wrong

2 to try to turn back history

3 a perverse way of doing things

1 incorporating diverse things (idiom)

2 eclectic

3 all-embracing

1 excelling both in morals and studies (idiom); top marks for studies and for behavior (at school)

2 a paragon of virtue and learning

1 (idiom) to teach in line with the student's ability