172　How long? 要多久？

Knitting is a passion for my friend Lisa, who is a caregiver for the elderly. When she brings her clients to doctor's appointments, she knits while she waits. Recently she showed me a gorgeous scarf she'd made. “How long does something like that take?” I asked. “About one stress test and one colonoscopy,” she estimated.
编织是我朋友丽莎的喜好。她是专职照顾老年人的。当她带老年人去看医生的时候，她就边织边等。最近，她给我看她织的一条非常漂亮的围巾。我问她：“像这样的围巾要织多久？”她估计说：“大约一次心脏强度测试加一次结肠镜检查。”