Sky sign
高楼广告牌
🧩 词语组成解析
sky
[skaɪ]
n. 天（空）;
vt. 将…击向空中;将…高挂;
🗣️ 情景例句
There are lots of places to go,
有很多地方要去，
A faithful friend is hard to find.
益友难得。
So was born the echo-sounding apparatus, now in general use in ships.
这样就产生了目前各种船舶上普遍应用的回声探测仪。