Optical efficiency
[电] 光效率
🧩 词语组成解析
🗣️ 情景例句
Have you been getting enough rest?
你休息的足够吗？
Thank you for your help.
谢谢您的帮助。
Once he had done this, he had been able to turn on the supply.
一旦他接上了接头，他就能够打开供气阀。