Biquinolyl
[化] 联喹啉
🗣️ 情景例句
In the home?
在家中？
On a cold day, a warm fireplace feels very nice.
在天寒地冻的日子，温暖的炉火旁是很舒服的。
I want to improve, but I don't know how.
我想提高它，但又不知道怎么样才能提高。