Perimeter function
[计] 周长函数
🧩 词语组成解析
🗣️ 情景例句
I'll go down to Henry's grocery. He's always open.
我到亨利杂货店去。那里总是开门营业的
On a crowded train, one comes in contact with many people.
在拥挤的火车里面，会和许多人接触。
A small fishing boat was carried miles out to sea by the powerful fish as it pulled on the line.
一条小渔船被一条咬住钩的强壮的大鱼拖到了几英里以外的海面上。