Optical amplifier
[计] 光放大器
🧩 词语组成解析
🗣️ 情景例句
Yes. This is Richard Stewart.
是的。我是Richard Stewart。
The first element of success is the determination to succeed.
成功的首要因素是要有成功的决心。
The workers all wear thick clothes and glassed over their eyes.
工人们作都穿着厚厚的衣服并且戴着眼镜。