Unidirectional switch
[计] 单向开关
🧩 词语组成解析
unidirectional
[,ju:nidi'rekʃənəl]
adj. 单向的，单向性的;
switch
[swɪtʃ]
n. 开关;转换，转换器;软鞭子;[信]接线台;
vt.& vi. 转变，改变;转换;关闭电流;鞭打;
vt. 转换;挥动（棍棒、鞭子等）;迅速转动;鞭打;
vi. 交换;调换;
🗣️ 情景例句
What are you majoring in?
你主修什么专业？
It is harder to marry a daughter well than to bring her up well.
养女容易嫁女难。
So the number of stars that we know exist is now estimated at about 300 million million million.
因此，我们所知道的现有恒星数目估计约有30亿×1000亿颗。