Tetraether
四醚
🗣️ 情景例句
Yes, I do. Change back into your jeans,
是的， 我想看看。换回你的牛仔裤，
Is it serious?
我的病严重吗？
At night, families often stay in the open air near their houses.
晚上很多人家常呆在附近户外。