practise at

• • 练习：

    The old lady has practised a lot at drawing and she is now a famous painter.

    这位老妇人刻苦练习绘画，她现在是一名著名画家了。

  • 从事某个职业：

    He practised at the pawnshop counter for many years.

    他当过好多年当铺老板。