sleek and agile as a gymnast; as nimble as a deer; nimble fingers; quick of foot; the old dog was so spry it was halfway up the stairs before we could stop it.

• 像体操运动员一样健壮、敏捷；像鹿一样敏捷；敏捷的手指；步履敏捷；那条老狗非常敏捷，在我们能够止住它之前，它已经跑上了楼梯的一半。