1 simple

2 not complicated

1 simply

2 at all

3 practically

1 to practice

2 to train

3 to drill

4 to perfect (one's skill)

5 exercise

1 to practice

2 exercise

3 drill

4 practice

5 classifier: 个 gè

1 capable and experienced

1 all talk and no action (idiom)

2 to preach what one does not practice

3 same as: 光说不做 guāng shuō bù zuò

1 crude but simple methods (idiom); use whatever methods you can

2 to do things simply and thriftily

3 It's not pretty but it works.

1 brief and to the point (idiom)

2 succinct

1 to speak concisely and practice frequently (idiom)

1 concise and comprehensive (idiom)