Zone boundary
[计] 区域边界
🧩 词语组成解析
zone
[zon]
n. 地带;区域，范围;地区，时区;[物]晶带;
vt. 划分成带;用带子围绕;
vi. 分成区，分成地带;
🗣️ 情景例句
Hi, gang. Hi, everybody.
嗨 ，各位。
To hear a hundred times is not so good as to see once.
百闻不如一见。
It is a world of red sandy deserts (hence its name----the Red Planet),
红色行星），