Thiophanthrene
萘并[2, 3-b]噻吩
??? 情景例句
Well keep in touch, ok?
保持聯(lián)絡，好嗎？
See, listen, and be silent, and you will live in peace.
多看多聽少多嘴，你會太平過日子。
The farmers are all busy, getting ready for the next year.
農(nóng)民們則全都忙著為下一年作準備。