Perimeter function
[计] 周长函数
🧩 词语组成解析
🗣️ 情景例句
I'll be seeing you!
再见。
The farmer is hoeing the fields.
农民在耕地。
but more often than not, the greater part of the journey is spent on roads with few service stations and too much traffic.
但旅行的大部分时间都花在路上，而且只有很少的服务设施，交通也很拥挤。