Optron
光导发光元件
🗣️ 情景例句
He is still unable to express himself in English.
他仍然不能用英语表达自己的意思。
The wolf has a winning game when the shepherds quarrel.
鹬蚌相争，渔翁得利。
Some people think that the weather is unpleasant, the city ugly and dirty, the competition fierce and the streets unsafe.
有些人认为，这儿的气候不佳，市容丑陋肮脏，竞争激烈，街上不安全。