at our leisure的用法和样例：
- They're just defenseless dolls we set up to knock down at our leisure.
- "In orbit, drainage of the foam is virtually absent, so we can bring a foam to the critical point and then explore it at our leisure," Durian says.
- We must take a hard look at our finances.
- She looked in on us [at our office]once in a while.
- Our new friends called at our house last week.
- We eventually arrived at our destination.