Effusor
漫射体
🗣️ 情景例句
I can assure you that as long as you stay at home, you're safe.
我可向你保证，只要你呆在家里就会很安全。
What's your nationality?I'm a naturalized American.
我是加入美国国籍的美国人，你的国籍是什么？
I suddenly felt very worried, but could not say anything.
我突然非常着急起来，但却什么也说不出来。