Optical efficiency
[电] 光效率
🧩 词语组成解析
🗣️ 情景例句
Did you know
你知道
These clothes are very beautiful, but I can't afford to pay that much.
这些衣服很漂亮，但是我买不起。
in the form of a large group of enlightened young men and women who are potential leaders.
便是培养出大批有知识的男女青年，这些人可能会成为未来的栋梁。