Effective use of energy sources
[经] 有效利用能源
🧩 词语组成解析
effective
[ɪ'fɛktɪv]
adj. 有效的;起作用的;实际的，实在的;给人深刻印象;
n. [军]现役兵额，有生力量，精兵;
ef出+fect做，制作 +ive形容词后缀 →做出来的 → 有效的
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
n. 输入源；发起者；来源（source的复数）
🗣️ 情景例句
I think I'm quite proficient in both written and spoken English.
我认为我在英语读写方面相当熟练。
At bedtime, I take off my clothes and put on my pajamas.
在上床时间，我脱掉衣服并且穿上我的睡衣。
During that time she so gained my aunt's confidence that she was put in charge of the domestic staff.
在此期间，她赢得了姑母的赏识，甚至当上了大管家。