Power supply variation
[電] 電源變量
?? 詞語組成解析
power
['pa??]
n. [機]動力，功率;力量;政權，權力;強國，大國;
vt. 運轉;用發動機發動;使…有力量;
vi. 靠動力行進;快速行進;
adj. 權力的;機械能的，電動的;用電力（或動力）發動的;
supply
[s?'pla?]
vt. 供給;補充;彌補（缺陷、損失等）;向…提供（物資等）;
n. 供給物;儲備物質;糧食;
vi. 暫代他人職務;
sup在下面+ply重疊，折疊→重疊下去→供應[下去],補給
??? 情景例句
By the way, will we be able to get a refund on this cancellation?
順便問一下，我們取消后可拿回定金嗎？
I try to be punctual in getting dinner on the table.
我一向設法讓晚餐菜肴準時上餐桌。
It looks like the shipping company did this.
應該是貨運公司造成的吧。