Signaling device
un. 信号设备；信号装置\\n
🧩 词语组成解析
n. 发信号；打信号
🗣️ 情景例句
They talk about things like family, work, school or sports.
他们常常谈论家庭，工作，学校或运动。
It's a poor mouse that has only on hole.
鼠只有一洞，必先把命送。
Look at the sun! It's very bright.
瞧，阳光灿烂！