Efficiency standards
[经] 效率标准
🧩 词语组成解析
n. 标准；规格（standard的复数）
🗣️ 情景例句
Do you have anything to declare for customs?
有什么要申报呀？
I'm going to order five dozen.
我要订五打。
Will you be free tomorrow evening?
你明晚有空吗？