1 in practice 实际上
2 the practice of doing sth 做某事的习惯
3 be out of practice（因久不练习而）荒废,生疏
4 be in practice 经常练习,熟练
5 put sth into practice 把某物（主意、计划等）付诸实施
6 practice makes perfect 熟能生巧