Reverse voltage
[計] 反向電壓
?? 詞語組成解析
reverse
[r?'v?s]
vt.& vi. （使）反轉;（使）顛倒;掉換，交換;[法]撤消，推翻;
vi. 倒退;[橋牌]逆叫;
adj. 反面的;顛倒的;倒開的;[生]倒卷的;
n. 倒轉，反向;[機]回動;倒退;失敗;
re向后，相反+verse轉→反轉，顛倒
??? 情景例句
They don't have room service at Old Country Inn. Old Country Inn
沒有房間服務部。
I invited him ti come down, but he wouldn't.
我請他下來，但是他不肯。
Dad, this box is too heavy. We can't carry it.
爸爸，這個箱子太重了，我搬不動。