Frequency-change signaling
[电] 变频发讯号
🧩 词语组成解析
frequency
['frikwənsi]
n. 频繁性;[数][物]频率，次数;频率分布;
fr + equ =equal,even,表示“相等，平均” + enc + y [形容词后缀] → n.屡次；次数；频率
change
[tʃeindʒ]
vt. 改变，变更;交换，替换;兑换;换衣服（床单）;
vi. 改变，转变;交换，互换;换衣，更衣;
n. 变化，改变;交换，交替;零钱，找头;代替物;
n. 发信号；打信号
🗣️ 情景例句
Find a productive hobby, and see if you can learn something.
找一个具有意义的爱好，看你能否从中学到什么。
A tree is known by its fruit.
观其行而知其人。
'Mr.Eames,' he said, in a mournful voice, 'you have just killed that child!'
“埃姆斯先生，”他以悲伤的声调说，“你刚刚把那个小孩压死了！”