Spectralite
光学玻璃
🗣️ 情景例句
He is working on a book about the Vietnam War.
他正在写一本关于越战的书。
We are thinking of expanding into the Chinese market.
我们想把生意扩大到中国市场。
I had no sooner got off the ship than I was assailed by a man who wanted to sell me a diamond ring.
我刚下船，就被一个人截住，他向我兜售一枚钻石戒指。