Infrared surveillance system
[计] 红外监视系统
🧩 词语组成解析
infrared
['infrə'red]
adj. <物>红外线的;
n. 红外线;
🗣️ 情景例句
Right.
对。
Courtesy costs nothing.
谦虚恭敬，不用分文。
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。