1 to do an activity or train regularly so that you become very good at sth 练习:
If you want to play a musical instrument well, you must practise every day.如果你乐器想演奏得好,你必须天天练习。He always wants to practise his English onme.他老是想跟我练习英语。
2 to do sth or take part in sth regularly or publicly (经常或公开地)做,参与:
a practising Catholic/Jew/Muslim虔诚的天主教徒╱犹太教徒╱穆斯林
3practise (sth/as sth) to work as a doctor or lawyer (医生或律师)开业,执业:
She's practising as a barrister in Leeds.他在利兹当律师。He was banned from practising medicine.他被禁止行医。